++2009-05-18 Miguel de Icaza <miguel@novell.com>
++
++ * Rename `threads.c' to `wthreads.c' as broken build systems are
++ not able to cope with two files with the same name across multiple
++ directories.
++
+2009-05-15 Geoff Norton <gnorton@novell.com>
+
+ * handles.c: Don't start the collection thread if we've disabled
+ shared handles.
+
+2009-05-12 Zoltan Varga <vargaz@gmail.com>
+
+ * collection.c (collection_thread): Get rid of all the ifdefs and
+ gcc attributes, simply return NULL.
+
+2009-05-11 Zoltan Varga <vargaz@gmail.com>
+
+ * shared.c: Applied patch from Koushik K. Dutta (koush@koushikdutta.com).
+ Fix the build on android.
+
+2009-05-09 Miguel de Icaza <miguel@novell.com>
+
+ * messages.c: Split the scan into common and uncommon messages to
+ allow the messages that are not produced by Mono to be removed on
+ embedded scenarios.
+
+ * messages.c (message_string): instead of having a gigantic switch
+ table, use a sorted structure in memory and do a binary search on
+ it.
+
+ This reduces the runtime size by 49k and the debugging symbols by
+ 400k.
+
2009-04-29 Gonzalo Paniagua Javier <gonzalo@novell.com>
* sockets.c: don't display a warning when connect() fails because the
uglify.h \
versioninfo.h \
wait.h \
-- wapi.h
++ wapi.h
OTHER_SRC = \
access.h \
status.h \
system.c \
system.h \
-- threads.c \
threads.h \
thread-private.h \
timefuncs.c \
wapi_glob.h \
wapi_glob.c \
wapi.h \
-- wapi-private.h
++ wapi-private.h \
++ wthreads.c
++
WINDOWS_H = \
io-layer.h
+++ /dev/null
--/*
-- * threads.c: Thread handles
-- *
-- * Author:
-- * Dick Porter (dick@ximian.com)
-- *
-- * (C) 2002-2006 Ximian, Inc.
-- */
--
--#include <config.h>
--#include <stdio.h>
--#include <glib.h>
--#include <string.h>
--#include <mono/utils/gc_wrapper.h>
--#include <pthread.h>
--#include <signal.h>
--#include <sched.h>
--#include <sys/time.h>
--#include <errno.h>
--#include <sys/types.h>
--#include <unistd.h>
--
--#include <mono/io-layer/wapi.h>
--#include <mono/io-layer/wapi-private.h>
--#include <mono/io-layer/handles-private.h>
--#include <mono/io-layer/misc-private.h>
--#include <mono/io-layer/mono-mutex.h>
--#include <mono/io-layer/thread-private.h>
--#include <mono/io-layer/mono-spinlock.h>
--#include <mono/io-layer/mutex-private.h>
--#include <mono/io-layer/atomic.h>
--
--#ifdef HAVE_VALGRIND_MEMCHECK_H
--#include <valgrind/memcheck.h>
--#endif
--
--#undef DEBUG
--#undef TLS_DEBUG
--
--#if 0
--#define WAIT_DEBUG(code) do { code } while (0)
--#else
--#define WAIT_DEBUG(code) do { } while (0)
--#endif
--
--/* Hash threads with tids. I thought of using TLS for this, but that
-- * would have to set the data in the new thread, which is more hassle
-- */
--static mono_once_t thread_hash_once = MONO_ONCE_INIT;
--static pthread_key_t thread_hash_key;
--
--/* This key is used with attached threads and a destructor to signal
-- * when attached threads exit, as they don't have the thread_exit()
-- * infrastructure
-- */
--static pthread_key_t thread_attached_key;
--
--struct _WapiHandleOps _wapi_thread_ops = {
-- NULL, /* close */
-- NULL, /* signal */
-- NULL, /* own */
-- NULL, /* is_owned */
-- NULL, /* special_wait */
-- NULL /* prewait */
--};
--
--static mono_once_t thread_ops_once=MONO_ONCE_INIT;
--
--static void thread_ops_init (void)
--{
-- _wapi_handle_register_capabilities (WAPI_HANDLE_THREAD,
-- WAPI_HANDLE_CAP_WAIT);
--}
--
--void _wapi_thread_cleanup (void)
--{
-- int ret;
--
-- ret = pthread_key_delete (thread_hash_key);
-- g_assert (ret == 0);
--
-- ret = pthread_key_delete (thread_attached_key);
-- g_assert (ret == 0);
--}
--
--/* Called by thread_exit(), but maybe indirectly by
-- * mono_thread_manage() via mono_thread_signal_self() too
-- */
--static void _wapi_thread_abandon_mutexes (gpointer handle)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
-- int i;
-- pid_t pid = _wapi_getpid ();
-- pthread_t tid = pthread_self ();
--
--#ifdef DEBUG
-- g_message ("%s: Thread %p abandoning held mutexes", __func__, handle);
--#endif
--
-- if (handle == NULL) {
-- handle = _wapi_thread_handle_from_id (pthread_self ());
-- if (handle == NULL) {
-- /* Something gone badly wrong... */
-- return;
-- }
-- }
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
-- return;
-- }
--
-- if (!pthread_equal (thread_handle->id, tid)) {
-- return;
-- }
--
-- for (i = 0; i < thread_handle->owned_mutexes->len; i++) {
-- gpointer mutex = g_ptr_array_index (thread_handle->owned_mutexes, i);
--
-- _wapi_mutex_abandon (mutex, pid, tid);
-- _wapi_thread_disown_mutex (mutex);
-- }
--}
--
--void _wapi_thread_set_termination_details (gpointer handle,
-- guint32 exitstatus)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
-- int thr_ret;
--
-- if (_wapi_handle_issignalled (handle) ||
-- _wapi_handle_type (handle) == WAPI_HANDLE_UNUSED) {
-- /* We must have already deliberately finished with
-- * this thread, so don't do any more now
-- */
-- return;
-- }
--
--#ifdef DEBUG
-- g_message ("%s: Thread %p terminating", __func__, handle);
--#endif
--
-- _wapi_thread_abandon_mutexes (handle);
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
--
-- return;
-- }
--
-- pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
-- handle);
-- thr_ret = _wapi_handle_lock_handle (handle);
-- g_assert (thr_ret == 0);
--
-- thread_handle->exitstatus = exitstatus;
-- thread_handle->state = THREAD_STATE_EXITED;
-- MONO_SEM_DESTROY (&thread_handle->suspend_sem);
-- g_ptr_array_free (thread_handle->owned_mutexes, TRUE);
--
-- _wapi_handle_set_signal_state (handle, TRUE, TRUE);
--
-- thr_ret = _wapi_handle_unlock_handle (handle);
-- g_assert (thr_ret == 0);
-- pthread_cleanup_pop (0);
--
--#ifdef DEBUG
-- g_message("%s: Recording thread handle %p id %ld status as %d",
-- __func__, handle, thread_handle->id, exitstatus);
--#endif
--
-- /* The thread is no longer active, so unref it */
-- _wapi_handle_unref (handle);
--}
--
--void _wapi_thread_signal_self (guint32 exitstatus)
--{
-- gpointer handle;
--
-- handle = _wapi_thread_handle_from_id (pthread_self ());
-- if (handle == NULL) {
-- /* Something gone badly wrong... */
-- return;
-- }
--
-- _wapi_thread_set_termination_details (handle, exitstatus);
--}
--
--/* Called by the thread creation code as a thread is finishing up, and
-- * by ExitThread()
--*/
--static void thread_exit (guint32 exitstatus, gpointer handle) G_GNUC_NORETURN;
--static void thread_exit (guint32 exitstatus, gpointer handle)
--{
-- _wapi_thread_set_termination_details (handle, exitstatus);
--
-- /* Call pthread_exit() to call destructors and really exit the
-- * thread
-- */
-- pthread_exit (NULL);
--}
--
--static void thread_attached_exit (gpointer handle)
--{
-- /* Drop the extra reference we take in thread_attach, now this
-- * thread is dead
-- */
--
-- _wapi_thread_set_termination_details (handle, 0);
--}
--
--static void thread_hash_init(void)
--{
-- int thr_ret;
--
-- thr_ret = pthread_key_create (&thread_hash_key, NULL);
-- g_assert (thr_ret == 0);
--
-- thr_ret = pthread_key_create (&thread_attached_key,
-- thread_attached_exit);
-- g_assert (thr_ret == 0);
--}
--
--static void _wapi_thread_suspend (struct _WapiHandle_thread *thread)
--{
-- g_assert (pthread_equal (thread->id, pthread_self ()));
--
-- while (MONO_SEM_WAIT (&thread->suspend_sem) != 0 &&
-- errno == EINTR);
--}
--
--static void _wapi_thread_resume (struct _WapiHandle_thread *thread)
--{
-- MONO_SEM_POST (&thread->suspend_sem);
--}
--
--static void *thread_start_routine (gpointer args) G_GNUC_NORETURN;
--static void *thread_start_routine (gpointer args)
--{
-- struct _WapiHandle_thread *thread = (struct _WapiHandle_thread *)args;
-- int thr_ret;
--
-- thr_ret = pthread_detach (pthread_self ());
-- g_assert (thr_ret == 0);
--
-- thr_ret = pthread_setspecific (thread_hash_key,
-- (void *)thread->handle);
-- if (thr_ret != 0) {
-- /* This is only supposed to happen when Mono is
-- shutting down. We cannot assert on it, though,
-- because we must not depend on metadata, which is
-- where the shutdown code is.
--
-- This is a race condition which arises because
-- pthreads don't allow creation of suspended threads.
-- Once Mono is set to shut down no new thread is
-- allowed to start, even though threads may still be
-- created. We emulate suspended threads in this
-- function by calling _wapi_thread_suspend() below.
--
-- So it can happen that even though Mono is already
-- shutting down we still end up here, and at this
-- point the thread_hash_key might already be
-- destroyed. */
-- pthread_exit (NULL);
-- }
--
-- thread->id = pthread_self();
--
--#ifdef DEBUG
-- g_message ("%s: started thread id %ld", __func__, thread->id);
--#endif
--
-- if (thread->create_flags & CREATE_SUSPENDED) {
-- _wapi_thread_suspend (thread);
-- }
--
-- thread_exit (thread->start_routine (thread->start_arg),
-- thread->handle);
--
--#ifndef __GNUC__
-- /* Even though we tell gcc that this function doesn't return,
-- * other compilers won't see that.
-- */
-- return(NULL);
--#endif
--}
--
--/**
-- * CreateThread:
-- * @security: Ignored for now.
-- * @stacksize: the size in bytes of the new thread's stack. Use 0 to
-- * default to the normal stack size. (Ignored for now).
-- * @start: The function that the new thread should start with
-- * @param: The parameter to give to @start.
-- * @create: If 0, the new thread is ready to run immediately. If
-- * %CREATE_SUSPENDED, the new thread will be in the suspended state,
-- * requiring a ResumeThread() call to continue running.
-- * @tid: If non-NULL, the ID of the new thread is stored here. NB
-- * this is defined as a DWORD (ie 32bit) in the MS API, but we need to
-- * cope with 64 bit IDs for s390x and amd64.
-- *
-- * Creates a new threading handle.
-- *
-- * Return value: a new handle, or NULL
-- */
--gpointer CreateThread(WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 stacksize,
-- WapiThreadStart start, gpointer param, guint32 create,
-- gsize *tid)
--{
-- struct _WapiHandle_thread thread_handle = {0}, *thread_handle_p;
-- pthread_attr_t attr;
-- gpointer handle;
-- gboolean ok;
-- int ret;
-- int thr_ret;
-- int i, unrefs = 0;
-- gpointer ct_ret = NULL;
--
-- mono_once (&thread_hash_once, thread_hash_init);
-- mono_once (&thread_ops_once, thread_ops_init);
--
-- if (start == NULL) {
-- return(NULL);
-- }
--
-- thread_handle.state = THREAD_STATE_START;
-- thread_handle.owned_mutexes = g_ptr_array_new ();
-- thread_handle.create_flags = create;
-- thread_handle.start_routine = start;
-- thread_handle.start_arg = param;
--
-- handle = _wapi_handle_new (WAPI_HANDLE_THREAD, &thread_handle);
-- if (handle == _WAPI_HANDLE_INVALID) {
-- g_warning ("%s: error creating thread handle", __func__);
-- SetLastError (ERROR_GEN_FAILURE);
--
-- return (NULL);
-- }
--
-- pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
-- handle);
-- thr_ret = _wapi_handle_lock_handle (handle);
-- g_assert (thr_ret == 0);
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle_p);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
-- SetLastError (ERROR_GEN_FAILURE);
--
-- goto cleanup;
-- }
--
-- /* Hold a reference while the thread is active, because we use
-- * the handle to store thread exit information
-- */
-- _wapi_handle_ref (handle);
--
-- /* Set a 2M stack size. This is the default on Linux, but BSD
-- * needs it. (The original bug report from Martin Dvorak <md@9ll.cz>
-- * set the size to 2M-4k. I don't know why it's short by 4k, so
-- * I'm leaving it as 2M until I'm told differently.)
-- */
-- thr_ret = pthread_attr_init(&attr);
-- g_assert (thr_ret == 0);
--
-- /* defaults of 2Mb for 32bits and 4Mb for 64bits */
-- /* temporarily changed to use 1 MB: this allows more threads
-- * to be used, as well as using less virtual memory and so
-- * more is available for the GC heap.
-- */
-- if (stacksize == 0){
--#if HAVE_VALGRIND_MEMCHECK_H
-- if (RUNNING_ON_VALGRIND) {
-- stacksize = 1 << 20;
-- } else {
-- stacksize = (SIZEOF_VOID_P / 4) * 1024 * 1024;
-- }
--#else
-- stacksize = (SIZEOF_VOID_P / 4) * 1024 * 1024;
--#endif
-- }
--
--#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE
-- thr_ret = pthread_attr_setstacksize(&attr, stacksize);
-- g_assert (thr_ret == 0);
--#endif
--
-- MONO_SEM_INIT (&thread_handle_p->suspend_sem, 0);
-- thread_handle_p->handle = handle;
--
-- ret = pthread_create (&thread_handle_p->id, &attr,
-- thread_start_routine, (void *)thread_handle_p);
-- if (ret != 0) {
--#ifdef DEBUG
-- g_message ("%s: Thread create error: %s", __func__,
-- strerror(ret));
--#endif
--
-- /* Two, because of the reference we took above */
-- unrefs = 2;
--
-- goto cleanup;
-- }
-- ct_ret = handle;
--
--#ifdef DEBUG
-- g_message("%s: Started thread handle %p ID %ld", __func__, handle,
-- thread_handle_p->id);
--#endif
--
-- if (tid != NULL) {
--#ifdef PTHREAD_POINTER_ID
-- /* Don't use GPOINTER_TO_UINT here, it can't cope with
-- * sizeof(void *) > sizeof(uint) when a cast to uint
-- * would overflow
-- */
-- *tid = (gsize)(thread_handle_p->id);
--#else
-- *tid = thread_handle_p->id;
--#endif
-- }
--
--cleanup:
-- thr_ret = _wapi_handle_unlock_handle (handle);
-- g_assert (thr_ret == 0);
-- pthread_cleanup_pop (0);
--
-- /* Must not call _wapi_handle_unref() with the shared handles
-- * already locked
-- */
-- for (i = 0; i < unrefs; i++) {
-- _wapi_handle_unref (handle);
-- }
--
-- return(ct_ret);
--}
--
--/* The only time this function is called when tid != pthread_self ()
-- * is from OpenThread (), so we can fast-path most cases by just
-- * looking up the handle in TLS. OpenThread () must cope with a NULL
-- * return and do a handle search in that case.
-- */
--gpointer _wapi_thread_handle_from_id (pthread_t tid)
--{
-- gpointer ret;
--
-- if (pthread_equal (tid, pthread_self ()) &&
-- (ret = pthread_getspecific (thread_hash_key)) != NULL) {
-- /* We know the handle */
--
--#ifdef DEBUG
-- g_message ("%s: Returning %p for self thread %ld from TLS",
-- __func__, ret, tid);
--#endif
--
-- return(ret);
-- }
--
--#ifdef DEBUG
-- g_message ("%s: Returning NULL for unknown or non-self thread %ld",
-- __func__, tid);
--#endif
--
--
-- return(NULL);
--}
--
--static gboolean find_thread_by_id (gpointer handle, gpointer user_data)
--{
-- pthread_t tid = (pthread_t)user_data;
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
--
-- /* Ignore threads that have already exited (ie they are signalled) */
-- if (_wapi_handle_issignalled (handle) == FALSE) {
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- /* It's possible that the handle has vanished
-- * during the _wapi_search_handle before it
-- * gets here, so don't spam the console with
-- * warnings.
-- */
-- return(FALSE);
-- }
--
--#ifdef DEBUG
-- g_message ("%s: looking at thread %ld from process %d", __func__, thread_handle->id, 0);
--#endif
--
-- if (pthread_equal (thread_handle->id, tid)) {
--#ifdef DEBUG
-- g_message ("%s: found the thread we are looking for",
-- __func__);
--#endif
-- return(TRUE);
-- }
-- }
--
--#ifdef DEBUG
-- g_message ("%s: not found %ld, returning FALSE", __func__, tid);
--#endif
--
-- return(FALSE);
--}
--
--/* NB tid is 32bit in MS API, but we need 64bit on amd64 and s390x
-- * (and probably others)
-- */
--gpointer OpenThread (guint32 access G_GNUC_UNUSED, gboolean inherit G_GNUC_UNUSED, gsize tid)
--{
-- gpointer ret=NULL;
--
-- mono_once (&thread_hash_once, thread_hash_init);
-- mono_once (&thread_ops_once, thread_ops_init);
--
--#ifdef DEBUG
-- g_message ("%s: looking up thread %"G_GSIZE_FORMAT, __func__, tid);
--#endif
--
-- ret = _wapi_thread_handle_from_id ((pthread_t)tid);
-- if (ret == NULL) {
-- /* We need to search for this thread */
-- ret = _wapi_search_handle (WAPI_HANDLE_THREAD, find_thread_by_id, (gpointer)tid, NULL, FALSE/*TRUE*/); /* FIXME: have a proper look at this, me might not need to set search_shared = TRUE */
-- } else {
-- /* if _wapi_search_handle() returns a found handle, it
-- * refs it itself
-- */
-- _wapi_handle_ref (ret);
-- }
--
--#ifdef DEBUG
-- g_message ("%s: returning thread handle %p", __func__, ret);
--#endif
--
-- return(ret);
--}
--
--/**
-- * ExitThread:
-- * @exitcode: Sets the thread's exit code, which can be read from
-- * another thread with GetExitCodeThread().
-- *
-- * Terminates the calling thread. A thread can also exit by returning
-- * from its start function. When the last thread in a process
-- * terminates, the process itself terminates.
-- */
--void ExitThread(guint32 exitcode)
--{
-- gpointer thread = _wapi_thread_handle_from_id (pthread_self ());
--
-- if (thread != NULL) {
-- thread_exit(exitcode, thread);
-- } else {
-- /* Just blow this thread away */
-- pthread_exit (NULL);
-- }
--}
--
--/**
-- * GetExitCodeThread:
-- * @handle: The thread handle to query
-- * @exitcode: The thread @handle exit code is stored here
-- *
-- * Finds the exit code of @handle, and stores it in @exitcode. If the
-- * thread @handle is still running, the value stored is %STILL_ACTIVE.
-- *
-- * Return value: %TRUE, or %FALSE on error.
-- */
--gboolean GetExitCodeThread(gpointer handle, guint32 *exitcode)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
-- return (FALSE);
-- }
--
--#ifdef DEBUG
-- g_message ("%s: Finding exit status for thread handle %p id %ld",
-- __func__, handle, thread_handle->id);
--#endif
--
-- if (exitcode == NULL) {
--#ifdef DEBUG
-- g_message ("%s: Nowhere to store exit code", __func__);
--#endif
-- return(FALSE);
-- }
--
-- if (thread_handle->state != THREAD_STATE_EXITED) {
--#ifdef DEBUG
-- g_message ("%s: Thread still active (state %d, exited is %d)",
-- __func__, thread_handle->state,
-- THREAD_STATE_EXITED);
--#endif
-- *exitcode = STILL_ACTIVE;
-- return(TRUE);
-- }
--
-- *exitcode = thread_handle->exitstatus;
--
-- return(TRUE);
--}
--
--/**
-- * GetCurrentThreadId:
-- *
-- * Looks up the thread ID of the current thread. This ID can be
-- * passed to OpenThread() to create a new handle on this thread.
-- *
-- * Return value: the thread ID. NB this is defined as DWORD (ie 32
-- * bit) in the MS API, but we need to cope with 64 bit IDs for s390x
-- * and amd64. This doesn't really break the API, it just embraces and
-- * extends it on 64bit platforms :)
-- */
--gsize GetCurrentThreadId(void)
--{
-- pthread_t tid = pthread_self();
--
--#ifdef PTHREAD_POINTER_ID
-- /* Don't use GPOINTER_TO_UINT here, it can't cope with
-- * sizeof(void *) > sizeof(uint) when a cast to uint would
-- * overflow
-- */
-- return((gsize)tid);
--#else
-- return(tid);
--#endif
--}
--
--static gpointer thread_attach(gsize *tid)
--{
-- struct _WapiHandle_thread thread_handle = {0}, *thread_handle_p;
-- gpointer handle;
-- gboolean ok;
-- int thr_ret;
--
-- mono_once (&thread_hash_once, thread_hash_init);
-- mono_once (&thread_ops_once, thread_ops_init);
--
-- thread_handle.state = THREAD_STATE_START;
-- thread_handle.owned_mutexes = g_ptr_array_new ();
--
-- handle = _wapi_handle_new (WAPI_HANDLE_THREAD, &thread_handle);
-- if (handle == _WAPI_HANDLE_INVALID) {
-- g_warning ("%s: error creating thread handle", __func__);
--
-- SetLastError (ERROR_GEN_FAILURE);
-- return (NULL);
-- }
--
-- pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
-- handle);
-- thr_ret = _wapi_handle_lock_handle (handle);
-- g_assert (thr_ret == 0);
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle_p);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
--
-- SetLastError (ERROR_GEN_FAILURE);
-- goto cleanup;
-- }
--
-- /* Hold a reference while the thread is active, because we use
-- * the handle to store thread exit information
-- */
-- _wapi_handle_ref (handle);
--
-- /* suspend_sem is not used for attached threads, but
-- * thread_exit() might try to destroy it
-- */
-- MONO_SEM_INIT (&thread_handle_p->suspend_sem, 0);
-- thread_handle_p->handle = handle;
-- thread_handle_p->id = pthread_self ();
--
-- thr_ret = pthread_setspecific (thread_hash_key, (void *)handle);
-- g_assert (thr_ret == 0);
--
-- thr_ret = pthread_setspecific (thread_attached_key, (void *)handle);
-- g_assert (thr_ret == 0);
--
--#ifdef DEBUG
-- g_message("%s: Attached thread handle %p ID %ld", __func__, handle,
-- thread_handle_p->id);
--#endif
--
-- if (tid != NULL) {
--#ifdef PTHREAD_POINTER_ID
-- /* Don't use GPOINTER_TO_UINT here, it can't cope with
-- * sizeof(void *) > sizeof(uint) when a cast to uint
-- * would overflow
-- */
-- *tid = (gsize)(thread_handle_p->id);
--#else
-- *tid = thread_handle_p->id;
--#endif
-- }
--
--cleanup:
-- thr_ret = _wapi_handle_unlock_handle (handle);
-- g_assert (thr_ret == 0);
-- pthread_cleanup_pop (0);
--
-- return(handle);
--}
--
--gpointer _wapi_thread_duplicate ()
--{
-- gpointer ret = NULL;
--
-- mono_once (&thread_hash_once, thread_hash_init);
-- mono_once (&thread_ops_once, thread_ops_init);
--
-- ret = _wapi_thread_handle_from_id (pthread_self ());
-- if (!ret) {
-- ret = thread_attach (NULL);
-- } else {
-- _wapi_handle_ref (ret);
-- }
--
-- return(ret);
--}
--
--/**
-- * GetCurrentThread:
-- *
-- * Looks up the handle associated with the current thread. Under
-- * Windows this is a pseudohandle, and must be duplicated with
-- * DuplicateHandle() for some operations.
-- *
-- * Return value: The current thread handle, or %NULL on failure.
-- * (Unknown whether Windows has a possible failure here. It may be
-- * necessary to implement the pseudohandle-constant behaviour).
-- */
--gpointer GetCurrentThread(void)
--{
-- mono_once(&thread_hash_once, thread_hash_init);
-- mono_once (&thread_ops_once, thread_ops_init);
--
-- return(_WAPI_THREAD_CURRENT);
--}
--
--/**
-- * ResumeThread:
-- * @handle: the thread handle to resume
-- *
-- * Decrements the suspend count of thread @handle. A thread can only
-- * run if its suspend count is zero.
-- *
-- * Return value: the previous suspend count, or 0xFFFFFFFF on error.
-- */
--guint32 ResumeThread(gpointer handle)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
--
-- return (0xFFFFFFFF);
-- }
--
-- /* This is still a kludge that only copes with starting a
-- * thread that was suspended on create, so don't bother with
-- * the suspend count crap yet
-- */
-- _wapi_thread_resume (thread_handle);
-- return(0xFFFFFFFF);
--}
--
--/**
-- * SuspendThread:
-- * @handle: the thread handle to suspend
-- *
-- * Increments the suspend count of thread @handle. A thread can only
-- * run if its suspend count is zero.
-- *
-- * Return value: the previous suspend count, or 0xFFFFFFFF on error.
-- */
--guint32 SuspendThread(gpointer handle)
--{
-- return(0xFFFFFFFF);
--}
--
--/*
-- * We assume here that TLS_MINIMUM_AVAILABLE is less than
-- * PTHREAD_KEYS_MAX, allowing enough overhead for a few TLS keys for
-- * library usage.
-- *
-- * Currently TLS_MINIMUM_AVAILABLE is 64 and _POSIX_THREAD_KEYS_MAX
-- * (the minimum value for PTHREAD_KEYS_MAX) is 128, so we should be
-- * fine.
-- */
--
--static pthread_key_t TLS_keys[TLS_MINIMUM_AVAILABLE];
--static gboolean TLS_used[TLS_MINIMUM_AVAILABLE]={FALSE};
--static guint32 TLS_spinlock=0;
--
--guint32
--mono_pthread_key_for_tls (guint32 idx)
--{
-- return (guint32)TLS_keys [idx];
--}
--
--/**
-- * TlsAlloc:
-- *
-- * Allocates a Thread Local Storage (TLS) index. Any thread in the
-- * same process can use this index to store and retrieve values that
-- * are local to that thread.
-- *
-- * Return value: The index value, or %TLS_OUT_OF_INDEXES if no index
-- * is available.
-- */
--guint32 TlsAlloc(void)
--{
-- guint32 i;
-- int thr_ret;
--
-- MONO_SPIN_LOCK (TLS_spinlock);
--
-- for(i=0; i<TLS_MINIMUM_AVAILABLE; i++) {
-- if(TLS_used[i]==FALSE) {
-- TLS_used[i]=TRUE;
-- thr_ret = pthread_key_create(&TLS_keys[i], NULL);
-- g_assert (thr_ret == 0);
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
--#ifdef TLS_DEBUG
-- g_message ("%s: returning key %d", __func__, i);
--#endif
--
-- return(i);
-- }
-- }
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
--#ifdef TLS_DEBUG
-- g_message ("%s: out of indices", __func__);
--#endif
--
--
-- return(TLS_OUT_OF_INDEXES);
--}
--
--#define MAKE_GC_ID(idx) (GUINT_TO_POINTER((idx)|(GetCurrentThreadId()<<8)))
--
--/**
-- * TlsFree:
-- * @idx: The TLS index to free
-- *
-- * Releases a TLS index, making it available for reuse. This call
-- * will delete any TLS data stored under index @idx in all threads.
-- *
-- * Return value: %TRUE on success, %FALSE otherwise.
-- */
--gboolean TlsFree(guint32 idx)
--{
-- int thr_ret;
--
--#ifdef TLS_DEBUG
-- g_message ("%s: freeing key %d", __func__, idx);
--#endif
--
-- MONO_SPIN_LOCK (TLS_spinlock);
--
-- if(TLS_used[idx]==FALSE) {
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
-- return(FALSE);
-- }
--
-- TLS_used[idx]=FALSE;
-- thr_ret = pthread_key_delete(TLS_keys[idx]);
-- g_assert (thr_ret == 0);
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
-- return(TRUE);
--}
--
--/**
-- * TlsGetValue:
-- * @idx: The TLS index to retrieve
-- *
-- * Retrieves the TLS data stored under index @idx.
-- *
-- * Return value: The value stored in the TLS index @idx in the current
-- * thread, or %NULL on error. As %NULL can be a valid return value,
-- * in this case GetLastError() returns %ERROR_SUCCESS.
-- */
--gpointer TlsGetValue(guint32 idx)
--{
-- gpointer ret;
--
--#ifdef TLS_DEBUG
-- g_message ("%s: looking up key %d", __func__, idx);
--#endif
--
-- ret=pthread_getspecific(TLS_keys[idx]);
--
--#ifdef TLS_DEBUG
-- g_message ("%s: returning %p", __func__, ret);
--#endif
--
-- return(ret);
--}
--
--/**
-- * TlsSetValue:
-- * @idx: The TLS index to store
-- * @value: The value to store under index @idx
-- *
-- * Stores @value at TLS index @idx.
-- *
-- * Return value: %TRUE on success, %FALSE otherwise.
-- */
--gboolean TlsSetValue(guint32 idx, gpointer value)
--{
-- int ret;
--
--#ifdef TLS_DEBUG
-- g_message ("%s: setting key %d to %p", __func__, idx, value);
--#endif
--
-- MONO_SPIN_LOCK (TLS_spinlock);
--
-- if(TLS_used[idx]==FALSE) {
--#ifdef TLS_DEBUG
-- g_message ("%s: key %d unused", __func__, idx);
--#endif
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
-- return(FALSE);
-- }
--
-- ret=pthread_setspecific(TLS_keys[idx], value);
-- if(ret!=0) {
--#ifdef TLS_DEBUG
-- g_message ("%s: pthread_setspecific error: %s", __func__,
-- strerror (ret));
--#endif
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
-- return(FALSE);
-- }
--
-- MONO_SPIN_UNLOCK (TLS_spinlock);
--
-- return(TRUE);
--}
--
--/**
-- * SleepEx:
-- * @ms: The time in milliseconds to suspend for
-- * @alertable: if TRUE, the wait can be interrupted by an APC call
-- *
-- * Suspends execution of the current thread for @ms milliseconds. A
-- * value of zero causes the thread to relinquish its time slice. A
-- * value of %INFINITE causes an infinite delay.
-- */
--guint32 SleepEx(guint32 ms, gboolean alertable)
--{
-- struct timespec req, rem;
-- int ms_quot, ms_rem;
-- int ret;
-- gpointer current_thread = NULL;
--
--#ifdef DEBUG
-- g_message("%s: Sleeping for %d ms", __func__, ms);
--#endif
--
-- if (alertable) {
-- current_thread = _wapi_thread_handle_from_id (pthread_self ());
-- if (current_thread == NULL) {
-- SetLastError (ERROR_INVALID_HANDLE);
-- return(WAIT_FAILED);
-- }
--
-- if (_wapi_thread_apc_pending (current_thread)) {
-- _wapi_thread_dispatch_apc_queue (current_thread);
-- return WAIT_IO_COMPLETION;
-- }
-- }
--
-- if(ms==0) {
-- sched_yield();
-- return 0;
-- }
--
-- /* FIXME: check for INFINITE and sleep forever */
-- ms_quot = ms / 1000;
-- ms_rem = ms % 1000;
--
-- req.tv_sec=ms_quot;
-- req.tv_nsec=ms_rem*1000000;
--
--again:
-- ret=nanosleep(&req, &rem);
--
-- if (alertable && _wapi_thread_apc_pending (current_thread)) {
-- _wapi_thread_dispatch_apc_queue (current_thread);
-- return WAIT_IO_COMPLETION;
-- }
--
-- if(ret==-1) {
-- /* Sleep interrupted with rem time remaining */
--#ifdef DEBUG
-- guint32 rems=rem.tv_sec*1000 + rem.tv_nsec/1000000;
--
-- g_message("%s: Still got %d ms to go", __func__, rems);
--#endif
-- req=rem;
-- goto again;
-- }
--
-- return 0;
--}
--
--void Sleep(guint32 ms)
--{
-- SleepEx(ms, FALSE);
--}
--
--gboolean _wapi_thread_cur_apc_pending (void)
--{
-- gpointer thread = _wapi_thread_handle_from_id (pthread_self ());
--
-- if (thread == NULL) {
-- SetLastError (ERROR_INVALID_HANDLE);
-- return(FALSE);
-- }
--
-- return(_wapi_thread_apc_pending (thread));
--}
--
--gboolean _wapi_thread_apc_pending (gpointer handle)
--{
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- if (ok == FALSE) {
--#ifdef DEBUG
-- /* This might happen at process shutdown, as all
-- * thread handles are forcibly closed. If a thread
-- * still has an alertable wait the final
-- * _wapi_thread_apc_pending check will probably fail
-- * to find the handle
-- */
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
--#endif
-- return (FALSE);
-- }
--
-- return(thread->has_apc || thread->wait_handle == INTERRUPTION_REQUESTED_HANDLE);
--}
--
--gboolean _wapi_thread_dispatch_apc_queue (gpointer handle)
--{
-- /* We don't support calling APC functions */
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- g_assert (ok);
--
-- thread->has_apc = FALSE;
--
-- return(TRUE);
--}
--
--/*
-- * In this implementation, APC_CALLBACK is ignored.
-- * if HANDLE refers to the current thread, the only effect this function has
-- * that if called from a signal handler, and the thread was waiting when receiving
-- * the signal, the wait will be broken after the signal handler returns.
-- * In this case, this function is async-signal-safe.
-- */
--guint32 QueueUserAPC (WapiApcProc apc_callback, gpointer handle,
-- gpointer param)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
--
-- ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- handle);
-- return (0);
-- }
--
-- g_assert (thread_handle->id == GetCurrentThreadId ());
-- /* No locking/memory barriers are needed here */
-- thread_handle->has_apc = TRUE;
-- return(1);
--}
--
--/*
-- * wapi_interrupt_thread:
-- *
-- * This is not part of the WIN32 API.
-- * The state of the thread handle HANDLE is set to 'interrupted' which means that
-- * if the thread calls one of the WaitFor functions, the function will return with
-- * WAIT_IO_COMPLETION instead of waiting. Also, if the thread was waiting when
-- * this function was called, the wait will be broken.
-- * It is possible that the wait functions return WAIT_IO_COMPLETION, but the
-- * target thread didn't receive the interrupt signal yet, in this case it should
-- * call the wait function again. This essentially means that the target thread will
-- * busy wait until it is ready to process the interruption.
-- * FIXME: get rid of QueueUserAPC and thread->has_apc, SleepEx seems to require it.
-- */
--void wapi_interrupt_thread (gpointer thread_handle)
--{
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
-- gpointer prev_handle, wait_handle;
-- guint32 idx;
-- pthread_cond_t *cond;
-- mono_mutex_t *mutex;
--
-- ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- g_assert (ok);
--
-- while (TRUE) {
-- wait_handle = thread->wait_handle;
--
-- /*
-- * Atomically obtain the handle the thread is waiting on, and
-- * change it to a flag value.
-- */
-- prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
-- INTERRUPTION_REQUESTED_HANDLE, wait_handle);
-- if (prev_handle == INTERRUPTION_REQUESTED_HANDLE)
-- /* Already interrupted */
-- return;
-- if (prev_handle == wait_handle)
-- break;
--
-- /* Try again */
-- }
--
-- WAIT_DEBUG (printf ("%p: state -> INTERRUPTED.\n", thread_handle->id););
--
-- if (!wait_handle)
-- /* Not waiting */
-- return;
--
-- /* If we reach here, then wait_handle is set to the flag value,
-- * which means that the target thread is either
-- * - before the first CAS in timedwait, which means it won't enter the
-- * wait.
-- * - it is after the first CAS, so it is already waiting, or it will
-- * enter the wait, and it will be interrupted by the broadcast.
-- */
-- idx = GPOINTER_TO_UINT(wait_handle);
-- cond = &_WAPI_PRIVATE_HANDLES(idx).signal_cond;
-- mutex = &_WAPI_PRIVATE_HANDLES(idx).signal_mutex;
--
-- mono_mutex_lock (mutex);
-- mono_cond_broadcast (cond);
-- mono_mutex_unlock (mutex);
--
-- /* ref added by set_wait_handle */
-- _wapi_handle_unref (wait_handle);
--}
--
--/*
-- * wapi_clear_interruption:
-- *
-- * This is not part of the WIN32 API.
-- * Clear the 'interrupted' state of the calling thread.
-- */
--void wapi_clear_interruption (void)
--{
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
-- gpointer prev_handle;
-- gpointer thread_handle;
--
-- thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
-- ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- g_assert (ok);
--
-- prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
-- NULL, INTERRUPTION_REQUESTED_HANDLE);
-- if (prev_handle == INTERRUPTION_REQUESTED_HANDLE)
-- WAIT_DEBUG (printf ("%p: state -> NORMAL.\n", GetCurrentThreadId ()););
--
-- _wapi_handle_unref (thread_handle);
--}
--
--char* wapi_current_thread_desc ()
--{
-- struct _WapiHandle_thread *thread;
-- int i;
-- gboolean ok;
-- gpointer handle;
-- gpointer thread_handle;
-- GString* text;
-- char *res;
--
-- thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
-- ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- if (!ok)
-- return g_strdup_printf ("thread handle %p state : lookup failure", thread_handle);
--
-- handle = thread->wait_handle;
-- text = g_string_new (0);
-- g_string_append_printf (text, "thread handle %p state : ", thread_handle);
--
-- if (!handle)
-- g_string_append_printf (text, "not waiting");
-- else if (handle == INTERRUPTION_REQUESTED_HANDLE)
-- g_string_append_printf (text, "interrupted state");
-- else
-- g_string_append_printf (text, "waiting on %p : %s ", handle, _wapi_handle_typename[_wapi_handle_type (handle)]);
-- g_string_append_printf (text, " owns (");
-- for (i = 0; i < thread->owned_mutexes->len; i++) {
-- gpointer mutex = g_ptr_array_index (thread->owned_mutexes, i);
-- if (i > 0)
-- g_string_append_printf (text, ", %p", mutex);
-- else
-- g_string_append_printf (text, "%p", mutex);
-- }
-- g_string_append_printf (text, ")");
--
-- res = text->str;
-- g_string_free (text, FALSE);
-- return res;
--}
--
--/**
-- * wapi_thread_set_wait_handle:
-- *
-- * Set the wait handle for the current thread to HANDLE. Return TRUE on success, FALSE
-- * if the thread is in interrupted state, and cannot start waiting.
-- */
--gboolean wapi_thread_set_wait_handle (gpointer handle)
--{
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
-- gpointer prev_handle;
-- gpointer thread_handle;
--
-- thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
-- ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- g_assert (ok);
--
-- prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
-- handle, NULL);
-- _wapi_handle_unref (thread_handle);
--
-- if (prev_handle == NULL) {
-- /* thread->wait_handle acts as an additional reference to the handle */
-- _wapi_handle_ref (handle);
--
-- WAIT_DEBUG (printf ("%p: state -> WAITING.\n", GetCurrentThreadId ()););
-- } else {
-- g_assert (prev_handle == INTERRUPTION_REQUESTED_HANDLE);
-- WAIT_DEBUG (printf ("%p: unable to set state to WAITING.\n", GetCurrentThreadId ()););
-- }
--
-- return prev_handle == NULL;
--}
--
--/**
-- * wapi_thread_clear_wait_handle:
-- *
-- * Clear the wait handle of the current thread.
-- */
--void wapi_thread_clear_wait_handle (gpointer handle)
--{
-- struct _WapiHandle_thread *thread;
-- gboolean ok;
-- gpointer prev_handle;
-- gpointer thread_handle;
--
-- thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
-- ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread);
-- g_assert (ok);
--
-- prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
-- NULL, handle);
--
-- if (prev_handle == handle) {
-- _wapi_handle_unref (handle);
-- WAIT_DEBUG (printf ("%p: state -> NORMAL.\n", GetCurrentThreadId ()););
-- } else {
-- g_assert (prev_handle == INTERRUPTION_REQUESTED_HANDLE);
-- WAIT_DEBUG (printf ("%p: finished waiting.\n", GetCurrentThreadId ()););
-- }
--
-- _wapi_handle_unref (thread_handle);
--}
--
--void _wapi_thread_own_mutex (gpointer mutex)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
-- gpointer thread;
--
-- thread = _wapi_thread_handle_from_id (pthread_self ());
-- if (thread == NULL) {
-- g_warning ("%s: error looking up thread by ID", __func__);
-- return;
-- }
--
-- ok = _wapi_lookup_handle (thread, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- thread);
-- return;
-- }
--
-- _wapi_handle_ref (mutex);
--
-- g_ptr_array_add (thread_handle->owned_mutexes, mutex);
--}
--
--void _wapi_thread_disown_mutex (gpointer mutex)
--{
-- struct _WapiHandle_thread *thread_handle;
-- gboolean ok;
-- gpointer thread;
--
-- thread = _wapi_thread_handle_from_id (pthread_self ());
-- if (thread == NULL) {
-- g_warning ("%s: error looking up thread by ID", __func__);
-- return;
-- }
--
-- ok = _wapi_lookup_handle (thread, WAPI_HANDLE_THREAD,
-- (gpointer *)&thread_handle);
-- if (ok == FALSE) {
-- g_warning ("%s: error looking up thread handle %p", __func__,
-- thread);
-- return;
-- }
--
-- _wapi_handle_unref (mutex);
--
-- g_ptr_array_remove (thread_handle->owned_mutexes, mutex);
--}
--- /dev/null
--- /dev/null
++/*
++ * threads.c: Thread handles
++ *
++ * Author:
++ * Dick Porter (dick@ximian.com)
++ *
++ * (C) 2002-2006 Ximian, Inc.
++ */
++
++#include <config.h>
++#include <stdio.h>
++#include <glib.h>
++#include <string.h>
++#include <mono/utils/gc_wrapper.h>
++#include <pthread.h>
++#include <signal.h>
++#include <sched.h>
++#include <sys/time.h>
++#include <errno.h>
++#include <sys/types.h>
++#include <unistd.h>
++
++#include <mono/io-layer/wapi.h>
++#include <mono/io-layer/wapi-private.h>
++#include <mono/io-layer/handles-private.h>
++#include <mono/io-layer/misc-private.h>
++#include <mono/io-layer/mono-mutex.h>
++#include <mono/io-layer/thread-private.h>
++#include <mono/io-layer/mono-spinlock.h>
++#include <mono/io-layer/mutex-private.h>
++#include <mono/io-layer/atomic.h>
++
++#ifdef HAVE_VALGRIND_MEMCHECK_H
++#include <valgrind/memcheck.h>
++#endif
++
++#undef DEBUG
++#undef TLS_DEBUG
++
++#if 0
++#define WAIT_DEBUG(code) do { code } while (0)
++#else
++#define WAIT_DEBUG(code) do { } while (0)
++#endif
++
++/* Hash threads with tids. I thought of using TLS for this, but that
++ * would have to set the data in the new thread, which is more hassle
++ */
++static mono_once_t thread_hash_once = MONO_ONCE_INIT;
++static pthread_key_t thread_hash_key;
++
++/* This key is used with attached threads and a destructor to signal
++ * when attached threads exit, as they don't have the thread_exit()
++ * infrastructure
++ */
++static pthread_key_t thread_attached_key;
++
++struct _WapiHandleOps _wapi_thread_ops = {
++ NULL, /* close */
++ NULL, /* signal */
++ NULL, /* own */
++ NULL, /* is_owned */
++ NULL, /* special_wait */
++ NULL /* prewait */
++};
++
++static mono_once_t thread_ops_once=MONO_ONCE_INIT;
++
++static void thread_ops_init (void)
++{
++ _wapi_handle_register_capabilities (WAPI_HANDLE_THREAD,
++ WAPI_HANDLE_CAP_WAIT);
++}
++
++void _wapi_thread_cleanup (void)
++{
++ int ret;
++
++ ret = pthread_key_delete (thread_hash_key);
++ g_assert (ret == 0);
++
++ ret = pthread_key_delete (thread_attached_key);
++ g_assert (ret == 0);
++}
++
++/* Called by thread_exit(), but maybe indirectly by
++ * mono_thread_manage() via mono_thread_signal_self() too
++ */
++static void _wapi_thread_abandon_mutexes (gpointer handle)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++ int i;
++ pid_t pid = _wapi_getpid ();
++ pthread_t tid = pthread_self ();
++
++#ifdef DEBUG
++ g_message ("%s: Thread %p abandoning held mutexes", __func__, handle);
++#endif
++
++ if (handle == NULL) {
++ handle = _wapi_thread_handle_from_id (pthread_self ());
++ if (handle == NULL) {
++ /* Something gone badly wrong... */
++ return;
++ }
++ }
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++ return;
++ }
++
++ if (!pthread_equal (thread_handle->id, tid)) {
++ return;
++ }
++
++ for (i = 0; i < thread_handle->owned_mutexes->len; i++) {
++ gpointer mutex = g_ptr_array_index (thread_handle->owned_mutexes, i);
++
++ _wapi_mutex_abandon (mutex, pid, tid);
++ _wapi_thread_disown_mutex (mutex);
++ }
++}
++
++void _wapi_thread_set_termination_details (gpointer handle,
++ guint32 exitstatus)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++ int thr_ret;
++
++ if (_wapi_handle_issignalled (handle) ||
++ _wapi_handle_type (handle) == WAPI_HANDLE_UNUSED) {
++ /* We must have already deliberately finished with
++ * this thread, so don't do any more now
++ */
++ return;
++ }
++
++#ifdef DEBUG
++ g_message ("%s: Thread %p terminating", __func__, handle);
++#endif
++
++ _wapi_thread_abandon_mutexes (handle);
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++
++ return;
++ }
++
++ pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
++ handle);
++ thr_ret = _wapi_handle_lock_handle (handle);
++ g_assert (thr_ret == 0);
++
++ thread_handle->exitstatus = exitstatus;
++ thread_handle->state = THREAD_STATE_EXITED;
++ MONO_SEM_DESTROY (&thread_handle->suspend_sem);
++ g_ptr_array_free (thread_handle->owned_mutexes, TRUE);
++
++ _wapi_handle_set_signal_state (handle, TRUE, TRUE);
++
++ thr_ret = _wapi_handle_unlock_handle (handle);
++ g_assert (thr_ret == 0);
++ pthread_cleanup_pop (0);
++
++#ifdef DEBUG
++ g_message("%s: Recording thread handle %p id %ld status as %d",
++ __func__, handle, thread_handle->id, exitstatus);
++#endif
++
++ /* The thread is no longer active, so unref it */
++ _wapi_handle_unref (handle);
++}
++
++void _wapi_thread_signal_self (guint32 exitstatus)
++{
++ gpointer handle;
++
++ handle = _wapi_thread_handle_from_id (pthread_self ());
++ if (handle == NULL) {
++ /* Something gone badly wrong... */
++ return;
++ }
++
++ _wapi_thread_set_termination_details (handle, exitstatus);
++}
++
++/* Called by the thread creation code as a thread is finishing up, and
++ * by ExitThread()
++*/
++static void thread_exit (guint32 exitstatus, gpointer handle) G_GNUC_NORETURN;
++static void thread_exit (guint32 exitstatus, gpointer handle)
++{
++ _wapi_thread_set_termination_details (handle, exitstatus);
++
++ /* Call pthread_exit() to call destructors and really exit the
++ * thread
++ */
++ pthread_exit (NULL);
++}
++
++static void thread_attached_exit (gpointer handle)
++{
++ /* Drop the extra reference we take in thread_attach, now this
++ * thread is dead
++ */
++
++ _wapi_thread_set_termination_details (handle, 0);
++}
++
++static void thread_hash_init(void)
++{
++ int thr_ret;
++
++ thr_ret = pthread_key_create (&thread_hash_key, NULL);
++ g_assert (thr_ret == 0);
++
++ thr_ret = pthread_key_create (&thread_attached_key,
++ thread_attached_exit);
++ g_assert (thr_ret == 0);
++}
++
++static void _wapi_thread_suspend (struct _WapiHandle_thread *thread)
++{
++ g_assert (pthread_equal (thread->id, pthread_self ()));
++
++ while (MONO_SEM_WAIT (&thread->suspend_sem) != 0 &&
++ errno == EINTR);
++}
++
++static void _wapi_thread_resume (struct _WapiHandle_thread *thread)
++{
++ MONO_SEM_POST (&thread->suspend_sem);
++}
++
++static void *thread_start_routine (gpointer args) G_GNUC_NORETURN;
++static void *thread_start_routine (gpointer args)
++{
++ struct _WapiHandle_thread *thread = (struct _WapiHandle_thread *)args;
++ int thr_ret;
++
++ thr_ret = pthread_detach (pthread_self ());
++ g_assert (thr_ret == 0);
++
++ thr_ret = pthread_setspecific (thread_hash_key,
++ (void *)thread->handle);
++ if (thr_ret != 0) {
++ /* This is only supposed to happen when Mono is
++ shutting down. We cannot assert on it, though,
++ because we must not depend on metadata, which is
++ where the shutdown code is.
++
++ This is a race condition which arises because
++ pthreads don't allow creation of suspended threads.
++ Once Mono is set to shut down no new thread is
++ allowed to start, even though threads may still be
++ created. We emulate suspended threads in this
++ function by calling _wapi_thread_suspend() below.
++
++ So it can happen that even though Mono is already
++ shutting down we still end up here, and at this
++ point the thread_hash_key might already be
++ destroyed. */
++ pthread_exit (NULL);
++ }
++
++ thread->id = pthread_self();
++
++#ifdef DEBUG
++ g_message ("%s: started thread id %ld", __func__, thread->id);
++#endif
++
++ if (thread->create_flags & CREATE_SUSPENDED) {
++ _wapi_thread_suspend (thread);
++ }
++
++ thread_exit (thread->start_routine (thread->start_arg),
++ thread->handle);
++
++#ifndef __GNUC__
++ /* Even though we tell gcc that this function doesn't return,
++ * other compilers won't see that.
++ */
++ return(NULL);
++#endif
++}
++
++/**
++ * CreateThread:
++ * @security: Ignored for now.
++ * @stacksize: the size in bytes of the new thread's stack. Use 0 to
++ * default to the normal stack size. (Ignored for now).
++ * @start: The function that the new thread should start with
++ * @param: The parameter to give to @start.
++ * @create: If 0, the new thread is ready to run immediately. If
++ * %CREATE_SUSPENDED, the new thread will be in the suspended state,
++ * requiring a ResumeThread() call to continue running.
++ * @tid: If non-NULL, the ID of the new thread is stored here. NB
++ * this is defined as a DWORD (ie 32bit) in the MS API, but we need to
++ * cope with 64 bit IDs for s390x and amd64.
++ *
++ * Creates a new threading handle.
++ *
++ * Return value: a new handle, or NULL
++ */
++gpointer CreateThread(WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 stacksize,
++ WapiThreadStart start, gpointer param, guint32 create,
++ gsize *tid)
++{
++ struct _WapiHandle_thread thread_handle = {0}, *thread_handle_p;
++ pthread_attr_t attr;
++ gpointer handle;
++ gboolean ok;
++ int ret;
++ int thr_ret;
++ int i, unrefs = 0;
++ gpointer ct_ret = NULL;
++
++ mono_once (&thread_hash_once, thread_hash_init);
++ mono_once (&thread_ops_once, thread_ops_init);
++
++ if (start == NULL) {
++ return(NULL);
++ }
++
++ thread_handle.state = THREAD_STATE_START;
++ thread_handle.owned_mutexes = g_ptr_array_new ();
++ thread_handle.create_flags = create;
++ thread_handle.start_routine = start;
++ thread_handle.start_arg = param;
++
++ handle = _wapi_handle_new (WAPI_HANDLE_THREAD, &thread_handle);
++ if (handle == _WAPI_HANDLE_INVALID) {
++ g_warning ("%s: error creating thread handle", __func__);
++ SetLastError (ERROR_GEN_FAILURE);
++
++ return (NULL);
++ }
++
++ pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
++ handle);
++ thr_ret = _wapi_handle_lock_handle (handle);
++ g_assert (thr_ret == 0);
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle_p);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++ SetLastError (ERROR_GEN_FAILURE);
++
++ goto cleanup;
++ }
++
++ /* Hold a reference while the thread is active, because we use
++ * the handle to store thread exit information
++ */
++ _wapi_handle_ref (handle);
++
++ /* Set a 2M stack size. This is the default on Linux, but BSD
++ * needs it. (The original bug report from Martin Dvorak <md@9ll.cz>
++ * set the size to 2M-4k. I don't know why it's short by 4k, so
++ * I'm leaving it as 2M until I'm told differently.)
++ */
++ thr_ret = pthread_attr_init(&attr);
++ g_assert (thr_ret == 0);
++
++ /* defaults of 2Mb for 32bits and 4Mb for 64bits */
++ /* temporarily changed to use 1 MB: this allows more threads
++ * to be used, as well as using less virtual memory and so
++ * more is available for the GC heap.
++ */
++ if (stacksize == 0){
++#if HAVE_VALGRIND_MEMCHECK_H
++ if (RUNNING_ON_VALGRIND) {
++ stacksize = 1 << 20;
++ } else {
++ stacksize = (SIZEOF_VOID_P / 4) * 1024 * 1024;
++ }
++#else
++ stacksize = (SIZEOF_VOID_P / 4) * 1024 * 1024;
++#endif
++ }
++
++#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE
++ thr_ret = pthread_attr_setstacksize(&attr, stacksize);
++ g_assert (thr_ret == 0);
++#endif
++
++ MONO_SEM_INIT (&thread_handle_p->suspend_sem, 0);
++ thread_handle_p->handle = handle;
++
++ ret = pthread_create (&thread_handle_p->id, &attr,
++ thread_start_routine, (void *)thread_handle_p);
++ if (ret != 0) {
++#ifdef DEBUG
++ g_message ("%s: Thread create error: %s", __func__,
++ strerror(ret));
++#endif
++
++ /* Two, because of the reference we took above */
++ unrefs = 2;
++
++ goto cleanup;
++ }
++ ct_ret = handle;
++
++#ifdef DEBUG
++ g_message("%s: Started thread handle %p ID %ld", __func__, handle,
++ thread_handle_p->id);
++#endif
++
++ if (tid != NULL) {
++#ifdef PTHREAD_POINTER_ID
++ /* Don't use GPOINTER_TO_UINT here, it can't cope with
++ * sizeof(void *) > sizeof(uint) when a cast to uint
++ * would overflow
++ */
++ *tid = (gsize)(thread_handle_p->id);
++#else
++ *tid = thread_handle_p->id;
++#endif
++ }
++
++cleanup:
++ thr_ret = _wapi_handle_unlock_handle (handle);
++ g_assert (thr_ret == 0);
++ pthread_cleanup_pop (0);
++
++ /* Must not call _wapi_handle_unref() with the shared handles
++ * already locked
++ */
++ for (i = 0; i < unrefs; i++) {
++ _wapi_handle_unref (handle);
++ }
++
++ return(ct_ret);
++}
++
++/* The only time this function is called when tid != pthread_self ()
++ * is from OpenThread (), so we can fast-path most cases by just
++ * looking up the handle in TLS. OpenThread () must cope with a NULL
++ * return and do a handle search in that case.
++ */
++gpointer _wapi_thread_handle_from_id (pthread_t tid)
++{
++ gpointer ret;
++
++ if (pthread_equal (tid, pthread_self ()) &&
++ (ret = pthread_getspecific (thread_hash_key)) != NULL) {
++ /* We know the handle */
++
++#ifdef DEBUG
++ g_message ("%s: Returning %p for self thread %ld from TLS",
++ __func__, ret, tid);
++#endif
++
++ return(ret);
++ }
++
++#ifdef DEBUG
++ g_message ("%s: Returning NULL for unknown or non-self thread %ld",
++ __func__, tid);
++#endif
++
++
++ return(NULL);
++}
++
++static gboolean find_thread_by_id (gpointer handle, gpointer user_data)
++{
++ pthread_t tid = (pthread_t)user_data;
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++
++ /* Ignore threads that have already exited (ie they are signalled) */
++ if (_wapi_handle_issignalled (handle) == FALSE) {
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ /* It's possible that the handle has vanished
++ * during the _wapi_search_handle before it
++ * gets here, so don't spam the console with
++ * warnings.
++ */
++ return(FALSE);
++ }
++
++#ifdef DEBUG
++ g_message ("%s: looking at thread %ld from process %d", __func__, thread_handle->id, 0);
++#endif
++
++ if (pthread_equal (thread_handle->id, tid)) {
++#ifdef DEBUG
++ g_message ("%s: found the thread we are looking for",
++ __func__);
++#endif
++ return(TRUE);
++ }
++ }
++
++#ifdef DEBUG
++ g_message ("%s: not found %ld, returning FALSE", __func__, tid);
++#endif
++
++ return(FALSE);
++}
++
++/* NB tid is 32bit in MS API, but we need 64bit on amd64 and s390x
++ * (and probably others)
++ */
++gpointer OpenThread (guint32 access G_GNUC_UNUSED, gboolean inherit G_GNUC_UNUSED, gsize tid)
++{
++ gpointer ret=NULL;
++
++ mono_once (&thread_hash_once, thread_hash_init);
++ mono_once (&thread_ops_once, thread_ops_init);
++
++#ifdef DEBUG
++ g_message ("%s: looking up thread %"G_GSIZE_FORMAT, __func__, tid);
++#endif
++
++ ret = _wapi_thread_handle_from_id ((pthread_t)tid);
++ if (ret == NULL) {
++ /* We need to search for this thread */
++ ret = _wapi_search_handle (WAPI_HANDLE_THREAD, find_thread_by_id, (gpointer)tid, NULL, FALSE/*TRUE*/); /* FIXME: have a proper look at this, me might not need to set search_shared = TRUE */
++ } else {
++ /* if _wapi_search_handle() returns a found handle, it
++ * refs it itself
++ */
++ _wapi_handle_ref (ret);
++ }
++
++#ifdef DEBUG
++ g_message ("%s: returning thread handle %p", __func__, ret);
++#endif
++
++ return(ret);
++}
++
++/**
++ * ExitThread:
++ * @exitcode: Sets the thread's exit code, which can be read from
++ * another thread with GetExitCodeThread().
++ *
++ * Terminates the calling thread. A thread can also exit by returning
++ * from its start function. When the last thread in a process
++ * terminates, the process itself terminates.
++ */
++void ExitThread(guint32 exitcode)
++{
++ gpointer thread = _wapi_thread_handle_from_id (pthread_self ());
++
++ if (thread != NULL) {
++ thread_exit(exitcode, thread);
++ } else {
++ /* Just blow this thread away */
++ pthread_exit (NULL);
++ }
++}
++
++/**
++ * GetExitCodeThread:
++ * @handle: The thread handle to query
++ * @exitcode: The thread @handle exit code is stored here
++ *
++ * Finds the exit code of @handle, and stores it in @exitcode. If the
++ * thread @handle is still running, the value stored is %STILL_ACTIVE.
++ *
++ * Return value: %TRUE, or %FALSE on error.
++ */
++gboolean GetExitCodeThread(gpointer handle, guint32 *exitcode)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++ return (FALSE);
++ }
++
++#ifdef DEBUG
++ g_message ("%s: Finding exit status for thread handle %p id %ld",
++ __func__, handle, thread_handle->id);
++#endif
++
++ if (exitcode == NULL) {
++#ifdef DEBUG
++ g_message ("%s: Nowhere to store exit code", __func__);
++#endif
++ return(FALSE);
++ }
++
++ if (thread_handle->state != THREAD_STATE_EXITED) {
++#ifdef DEBUG
++ g_message ("%s: Thread still active (state %d, exited is %d)",
++ __func__, thread_handle->state,
++ THREAD_STATE_EXITED);
++#endif
++ *exitcode = STILL_ACTIVE;
++ return(TRUE);
++ }
++
++ *exitcode = thread_handle->exitstatus;
++
++ return(TRUE);
++}
++
++/**
++ * GetCurrentThreadId:
++ *
++ * Looks up the thread ID of the current thread. This ID can be
++ * passed to OpenThread() to create a new handle on this thread.
++ *
++ * Return value: the thread ID. NB this is defined as DWORD (ie 32
++ * bit) in the MS API, but we need to cope with 64 bit IDs for s390x
++ * and amd64. This doesn't really break the API, it just embraces and
++ * extends it on 64bit platforms :)
++ */
++gsize GetCurrentThreadId(void)
++{
++ pthread_t tid = pthread_self();
++
++#ifdef PTHREAD_POINTER_ID
++ /* Don't use GPOINTER_TO_UINT here, it can't cope with
++ * sizeof(void *) > sizeof(uint) when a cast to uint would
++ * overflow
++ */
++ return((gsize)tid);
++#else
++ return(tid);
++#endif
++}
++
++static gpointer thread_attach(gsize *tid)
++{
++ struct _WapiHandle_thread thread_handle = {0}, *thread_handle_p;
++ gpointer handle;
++ gboolean ok;
++ int thr_ret;
++
++ mono_once (&thread_hash_once, thread_hash_init);
++ mono_once (&thread_ops_once, thread_ops_init);
++
++ thread_handle.state = THREAD_STATE_START;
++ thread_handle.owned_mutexes = g_ptr_array_new ();
++
++ handle = _wapi_handle_new (WAPI_HANDLE_THREAD, &thread_handle);
++ if (handle == _WAPI_HANDLE_INVALID) {
++ g_warning ("%s: error creating thread handle", __func__);
++
++ SetLastError (ERROR_GEN_FAILURE);
++ return (NULL);
++ }
++
++ pthread_cleanup_push ((void(*)(void *))_wapi_handle_unlock_handle,
++ handle);
++ thr_ret = _wapi_handle_lock_handle (handle);
++ g_assert (thr_ret == 0);
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle_p);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++
++ SetLastError (ERROR_GEN_FAILURE);
++ goto cleanup;
++ }
++
++ /* Hold a reference while the thread is active, because we use
++ * the handle to store thread exit information
++ */
++ _wapi_handle_ref (handle);
++
++ /* suspend_sem is not used for attached threads, but
++ * thread_exit() might try to destroy it
++ */
++ MONO_SEM_INIT (&thread_handle_p->suspend_sem, 0);
++ thread_handle_p->handle = handle;
++ thread_handle_p->id = pthread_self ();
++
++ thr_ret = pthread_setspecific (thread_hash_key, (void *)handle);
++ g_assert (thr_ret == 0);
++
++ thr_ret = pthread_setspecific (thread_attached_key, (void *)handle);
++ g_assert (thr_ret == 0);
++
++#ifdef DEBUG
++ g_message("%s: Attached thread handle %p ID %ld", __func__, handle,
++ thread_handle_p->id);
++#endif
++
++ if (tid != NULL) {
++#ifdef PTHREAD_POINTER_ID
++ /* Don't use GPOINTER_TO_UINT here, it can't cope with
++ * sizeof(void *) > sizeof(uint) when a cast to uint
++ * would overflow
++ */
++ *tid = (gsize)(thread_handle_p->id);
++#else
++ *tid = thread_handle_p->id;
++#endif
++ }
++
++cleanup:
++ thr_ret = _wapi_handle_unlock_handle (handle);
++ g_assert (thr_ret == 0);
++ pthread_cleanup_pop (0);
++
++ return(handle);
++}
++
++gpointer _wapi_thread_duplicate ()
++{
++ gpointer ret = NULL;
++
++ mono_once (&thread_hash_once, thread_hash_init);
++ mono_once (&thread_ops_once, thread_ops_init);
++
++ ret = _wapi_thread_handle_from_id (pthread_self ());
++ if (!ret) {
++ ret = thread_attach (NULL);
++ } else {
++ _wapi_handle_ref (ret);
++ }
++
++ return(ret);
++}
++
++/**
++ * GetCurrentThread:
++ *
++ * Looks up the handle associated with the current thread. Under
++ * Windows this is a pseudohandle, and must be duplicated with
++ * DuplicateHandle() for some operations.
++ *
++ * Return value: The current thread handle, or %NULL on failure.
++ * (Unknown whether Windows has a possible failure here. It may be
++ * necessary to implement the pseudohandle-constant behaviour).
++ */
++gpointer GetCurrentThread(void)
++{
++ mono_once(&thread_hash_once, thread_hash_init);
++ mono_once (&thread_ops_once, thread_ops_init);
++
++ return(_WAPI_THREAD_CURRENT);
++}
++
++/**
++ * ResumeThread:
++ * @handle: the thread handle to resume
++ *
++ * Decrements the suspend count of thread @handle. A thread can only
++ * run if its suspend count is zero.
++ *
++ * Return value: the previous suspend count, or 0xFFFFFFFF on error.
++ */
++guint32 ResumeThread(gpointer handle)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++
++ return (0xFFFFFFFF);
++ }
++
++ /* This is still a kludge that only copes with starting a
++ * thread that was suspended on create, so don't bother with
++ * the suspend count crap yet
++ */
++ _wapi_thread_resume (thread_handle);
++ return(0xFFFFFFFF);
++}
++
++/**
++ * SuspendThread:
++ * @handle: the thread handle to suspend
++ *
++ * Increments the suspend count of thread @handle. A thread can only
++ * run if its suspend count is zero.
++ *
++ * Return value: the previous suspend count, or 0xFFFFFFFF on error.
++ */
++guint32 SuspendThread(gpointer handle)
++{
++ return(0xFFFFFFFF);
++}
++
++/*
++ * We assume here that TLS_MINIMUM_AVAILABLE is less than
++ * PTHREAD_KEYS_MAX, allowing enough overhead for a few TLS keys for
++ * library usage.
++ *
++ * Currently TLS_MINIMUM_AVAILABLE is 64 and _POSIX_THREAD_KEYS_MAX
++ * (the minimum value for PTHREAD_KEYS_MAX) is 128, so we should be
++ * fine.
++ */
++
++static pthread_key_t TLS_keys[TLS_MINIMUM_AVAILABLE];
++static gboolean TLS_used[TLS_MINIMUM_AVAILABLE]={FALSE};
++static guint32 TLS_spinlock=0;
++
++guint32
++mono_pthread_key_for_tls (guint32 idx)
++{
++ return (guint32)TLS_keys [idx];
++}
++
++/**
++ * TlsAlloc:
++ *
++ * Allocates a Thread Local Storage (TLS) index. Any thread in the
++ * same process can use this index to store and retrieve values that
++ * are local to that thread.
++ *
++ * Return value: The index value, or %TLS_OUT_OF_INDEXES if no index
++ * is available.
++ */
++guint32 TlsAlloc(void)
++{
++ guint32 i;
++ int thr_ret;
++
++ MONO_SPIN_LOCK (TLS_spinlock);
++
++ for(i=0; i<TLS_MINIMUM_AVAILABLE; i++) {
++ if(TLS_used[i]==FALSE) {
++ TLS_used[i]=TRUE;
++ thr_ret = pthread_key_create(&TLS_keys[i], NULL);
++ g_assert (thr_ret == 0);
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++#ifdef TLS_DEBUG
++ g_message ("%s: returning key %d", __func__, i);
++#endif
++
++ return(i);
++ }
++ }
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++#ifdef TLS_DEBUG
++ g_message ("%s: out of indices", __func__);
++#endif
++
++
++ return(TLS_OUT_OF_INDEXES);
++}
++
++#define MAKE_GC_ID(idx) (GUINT_TO_POINTER((idx)|(GetCurrentThreadId()<<8)))
++
++/**
++ * TlsFree:
++ * @idx: The TLS index to free
++ *
++ * Releases a TLS index, making it available for reuse. This call
++ * will delete any TLS data stored under index @idx in all threads.
++ *
++ * Return value: %TRUE on success, %FALSE otherwise.
++ */
++gboolean TlsFree(guint32 idx)
++{
++ int thr_ret;
++
++#ifdef TLS_DEBUG
++ g_message ("%s: freeing key %d", __func__, idx);
++#endif
++
++ MONO_SPIN_LOCK (TLS_spinlock);
++
++ if(TLS_used[idx]==FALSE) {
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++ return(FALSE);
++ }
++
++ TLS_used[idx]=FALSE;
++ thr_ret = pthread_key_delete(TLS_keys[idx]);
++ g_assert (thr_ret == 0);
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++ return(TRUE);
++}
++
++/**
++ * TlsGetValue:
++ * @idx: The TLS index to retrieve
++ *
++ * Retrieves the TLS data stored under index @idx.
++ *
++ * Return value: The value stored in the TLS index @idx in the current
++ * thread, or %NULL on error. As %NULL can be a valid return value,
++ * in this case GetLastError() returns %ERROR_SUCCESS.
++ */
++gpointer TlsGetValue(guint32 idx)
++{
++ gpointer ret;
++
++#ifdef TLS_DEBUG
++ g_message ("%s: looking up key %d", __func__, idx);
++#endif
++
++ ret=pthread_getspecific(TLS_keys[idx]);
++
++#ifdef TLS_DEBUG
++ g_message ("%s: returning %p", __func__, ret);
++#endif
++
++ return(ret);
++}
++
++/**
++ * TlsSetValue:
++ * @idx: The TLS index to store
++ * @value: The value to store under index @idx
++ *
++ * Stores @value at TLS index @idx.
++ *
++ * Return value: %TRUE on success, %FALSE otherwise.
++ */
++gboolean TlsSetValue(guint32 idx, gpointer value)
++{
++ int ret;
++
++#ifdef TLS_DEBUG
++ g_message ("%s: setting key %d to %p", __func__, idx, value);
++#endif
++
++ MONO_SPIN_LOCK (TLS_spinlock);
++
++ if(TLS_used[idx]==FALSE) {
++#ifdef TLS_DEBUG
++ g_message ("%s: key %d unused", __func__, idx);
++#endif
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++ return(FALSE);
++ }
++
++ ret=pthread_setspecific(TLS_keys[idx], value);
++ if(ret!=0) {
++#ifdef TLS_DEBUG
++ g_message ("%s: pthread_setspecific error: %s", __func__,
++ strerror (ret));
++#endif
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++ return(FALSE);
++ }
++
++ MONO_SPIN_UNLOCK (TLS_spinlock);
++
++ return(TRUE);
++}
++
++/**
++ * SleepEx:
++ * @ms: The time in milliseconds to suspend for
++ * @alertable: if TRUE, the wait can be interrupted by an APC call
++ *
++ * Suspends execution of the current thread for @ms milliseconds. A
++ * value of zero causes the thread to relinquish its time slice. A
++ * value of %INFINITE causes an infinite delay.
++ */
++guint32 SleepEx(guint32 ms, gboolean alertable)
++{
++ struct timespec req, rem;
++ int ms_quot, ms_rem;
++ int ret;
++ gpointer current_thread = NULL;
++
++#ifdef DEBUG
++ g_message("%s: Sleeping for %d ms", __func__, ms);
++#endif
++
++ if (alertable) {
++ current_thread = _wapi_thread_handle_from_id (pthread_self ());
++ if (current_thread == NULL) {
++ SetLastError (ERROR_INVALID_HANDLE);
++ return(WAIT_FAILED);
++ }
++
++ if (_wapi_thread_apc_pending (current_thread)) {
++ _wapi_thread_dispatch_apc_queue (current_thread);
++ return WAIT_IO_COMPLETION;
++ }
++ }
++
++ if(ms==0) {
++ sched_yield();
++ return 0;
++ }
++
++ /* FIXME: check for INFINITE and sleep forever */
++ ms_quot = ms / 1000;
++ ms_rem = ms % 1000;
++
++ req.tv_sec=ms_quot;
++ req.tv_nsec=ms_rem*1000000;
++
++again:
++ ret=nanosleep(&req, &rem);
++
++ if (alertable && _wapi_thread_apc_pending (current_thread)) {
++ _wapi_thread_dispatch_apc_queue (current_thread);
++ return WAIT_IO_COMPLETION;
++ }
++
++ if(ret==-1) {
++ /* Sleep interrupted with rem time remaining */
++#ifdef DEBUG
++ guint32 rems=rem.tv_sec*1000 + rem.tv_nsec/1000000;
++
++ g_message("%s: Still got %d ms to go", __func__, rems);
++#endif
++ req=rem;
++ goto again;
++ }
++
++ return 0;
++}
++
++void Sleep(guint32 ms)
++{
++ SleepEx(ms, FALSE);
++}
++
++gboolean _wapi_thread_cur_apc_pending (void)
++{
++ gpointer thread = _wapi_thread_handle_from_id (pthread_self ());
++
++ if (thread == NULL) {
++ SetLastError (ERROR_INVALID_HANDLE);
++ return(FALSE);
++ }
++
++ return(_wapi_thread_apc_pending (thread));
++}
++
++gboolean _wapi_thread_apc_pending (gpointer handle)
++{
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ if (ok == FALSE) {
++#ifdef DEBUG
++ /* This might happen at process shutdown, as all
++ * thread handles are forcibly closed. If a thread
++ * still has an alertable wait the final
++ * _wapi_thread_apc_pending check will probably fail
++ * to find the handle
++ */
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++#endif
++ return (FALSE);
++ }
++
++ return(thread->has_apc || thread->wait_handle == INTERRUPTION_REQUESTED_HANDLE);
++}
++
++gboolean _wapi_thread_dispatch_apc_queue (gpointer handle)
++{
++ /* We don't support calling APC functions */
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ g_assert (ok);
++
++ thread->has_apc = FALSE;
++
++ return(TRUE);
++}
++
++/*
++ * In this implementation, APC_CALLBACK is ignored.
++ * if HANDLE refers to the current thread, the only effect this function has
++ * that if called from a signal handler, and the thread was waiting when receiving
++ * the signal, the wait will be broken after the signal handler returns.
++ * In this case, this function is async-signal-safe.
++ */
++guint32 QueueUserAPC (WapiApcProc apc_callback, gpointer handle,
++ gpointer param)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++
++ ok = _wapi_lookup_handle (handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ handle);
++ return (0);
++ }
++
++ g_assert (thread_handle->id == GetCurrentThreadId ());
++ /* No locking/memory barriers are needed here */
++ thread_handle->has_apc = TRUE;
++ return(1);
++}
++
++/*
++ * wapi_interrupt_thread:
++ *
++ * This is not part of the WIN32 API.
++ * The state of the thread handle HANDLE is set to 'interrupted' which means that
++ * if the thread calls one of the WaitFor functions, the function will return with
++ * WAIT_IO_COMPLETION instead of waiting. Also, if the thread was waiting when
++ * this function was called, the wait will be broken.
++ * It is possible that the wait functions return WAIT_IO_COMPLETION, but the
++ * target thread didn't receive the interrupt signal yet, in this case it should
++ * call the wait function again. This essentially means that the target thread will
++ * busy wait until it is ready to process the interruption.
++ * FIXME: get rid of QueueUserAPC and thread->has_apc, SleepEx seems to require it.
++ */
++void wapi_interrupt_thread (gpointer thread_handle)
++{
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++ gpointer prev_handle, wait_handle;
++ guint32 idx;
++ pthread_cond_t *cond;
++ mono_mutex_t *mutex;
++
++ ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ g_assert (ok);
++
++ while (TRUE) {
++ wait_handle = thread->wait_handle;
++
++ /*
++ * Atomically obtain the handle the thread is waiting on, and
++ * change it to a flag value.
++ */
++ prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
++ INTERRUPTION_REQUESTED_HANDLE, wait_handle);
++ if (prev_handle == INTERRUPTION_REQUESTED_HANDLE)
++ /* Already interrupted */
++ return;
++ if (prev_handle == wait_handle)
++ break;
++
++ /* Try again */
++ }
++
++ WAIT_DEBUG (printf ("%p: state -> INTERRUPTED.\n", thread_handle->id););
++
++ if (!wait_handle)
++ /* Not waiting */
++ return;
++
++ /* If we reach here, then wait_handle is set to the flag value,
++ * which means that the target thread is either
++ * - before the first CAS in timedwait, which means it won't enter the
++ * wait.
++ * - it is after the first CAS, so it is already waiting, or it will
++ * enter the wait, and it will be interrupted by the broadcast.
++ */
++ idx = GPOINTER_TO_UINT(wait_handle);
++ cond = &_WAPI_PRIVATE_HANDLES(idx).signal_cond;
++ mutex = &_WAPI_PRIVATE_HANDLES(idx).signal_mutex;
++
++ mono_mutex_lock (mutex);
++ mono_cond_broadcast (cond);
++ mono_mutex_unlock (mutex);
++
++ /* ref added by set_wait_handle */
++ _wapi_handle_unref (wait_handle);
++}
++
++/*
++ * wapi_clear_interruption:
++ *
++ * This is not part of the WIN32 API.
++ * Clear the 'interrupted' state of the calling thread.
++ */
++void wapi_clear_interruption (void)
++{
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++ gpointer prev_handle;
++ gpointer thread_handle;
++
++ thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
++ ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ g_assert (ok);
++
++ prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
++ NULL, INTERRUPTION_REQUESTED_HANDLE);
++ if (prev_handle == INTERRUPTION_REQUESTED_HANDLE)
++ WAIT_DEBUG (printf ("%p: state -> NORMAL.\n", GetCurrentThreadId ()););
++
++ _wapi_handle_unref (thread_handle);
++}
++
++char* wapi_current_thread_desc ()
++{
++ struct _WapiHandle_thread *thread;
++ int i;
++ gboolean ok;
++ gpointer handle;
++ gpointer thread_handle;
++ GString* text;
++ char *res;
++
++ thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
++ ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ if (!ok)
++ return g_strdup_printf ("thread handle %p state : lookup failure", thread_handle);
++
++ handle = thread->wait_handle;
++ text = g_string_new (0);
++ g_string_append_printf (text, "thread handle %p state : ", thread_handle);
++
++ if (!handle)
++ g_string_append_printf (text, "not waiting");
++ else if (handle == INTERRUPTION_REQUESTED_HANDLE)
++ g_string_append_printf (text, "interrupted state");
++ else
++ g_string_append_printf (text, "waiting on %p : %s ", handle, _wapi_handle_typename[_wapi_handle_type (handle)]);
++ g_string_append_printf (text, " owns (");
++ for (i = 0; i < thread->owned_mutexes->len; i++) {
++ gpointer mutex = g_ptr_array_index (thread->owned_mutexes, i);
++ if (i > 0)
++ g_string_append_printf (text, ", %p", mutex);
++ else
++ g_string_append_printf (text, "%p", mutex);
++ }
++ g_string_append_printf (text, ")");
++
++ res = text->str;
++ g_string_free (text, FALSE);
++ return res;
++}
++
++/**
++ * wapi_thread_set_wait_handle:
++ *
++ * Set the wait handle for the current thread to HANDLE. Return TRUE on success, FALSE
++ * if the thread is in interrupted state, and cannot start waiting.
++ */
++gboolean wapi_thread_set_wait_handle (gpointer handle)
++{
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++ gpointer prev_handle;
++ gpointer thread_handle;
++
++ thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
++ ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ g_assert (ok);
++
++ prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
++ handle, NULL);
++ _wapi_handle_unref (thread_handle);
++
++ if (prev_handle == NULL) {
++ /* thread->wait_handle acts as an additional reference to the handle */
++ _wapi_handle_ref (handle);
++
++ WAIT_DEBUG (printf ("%p: state -> WAITING.\n", GetCurrentThreadId ()););
++ } else {
++ g_assert (prev_handle == INTERRUPTION_REQUESTED_HANDLE);
++ WAIT_DEBUG (printf ("%p: unable to set state to WAITING.\n", GetCurrentThreadId ()););
++ }
++
++ return prev_handle == NULL;
++}
++
++/**
++ * wapi_thread_clear_wait_handle:
++ *
++ * Clear the wait handle of the current thread.
++ */
++void wapi_thread_clear_wait_handle (gpointer handle)
++{
++ struct _WapiHandle_thread *thread;
++ gboolean ok;
++ gpointer prev_handle;
++ gpointer thread_handle;
++
++ thread_handle = OpenThread (0, 0, GetCurrentThreadId ());
++ ok = _wapi_lookup_handle (thread_handle, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread);
++ g_assert (ok);
++
++ prev_handle = InterlockedCompareExchangePointer (&thread->wait_handle,
++ NULL, handle);
++
++ if (prev_handle == handle) {
++ _wapi_handle_unref (handle);
++ WAIT_DEBUG (printf ("%p: state -> NORMAL.\n", GetCurrentThreadId ()););
++ } else {
++ g_assert (prev_handle == INTERRUPTION_REQUESTED_HANDLE);
++ WAIT_DEBUG (printf ("%p: finished waiting.\n", GetCurrentThreadId ()););
++ }
++
++ _wapi_handle_unref (thread_handle);
++}
++
++void _wapi_thread_own_mutex (gpointer mutex)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++ gpointer thread;
++
++ thread = _wapi_thread_handle_from_id (pthread_self ());
++ if (thread == NULL) {
++ g_warning ("%s: error looking up thread by ID", __func__);
++ return;
++ }
++
++ ok = _wapi_lookup_handle (thread, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ thread);
++ return;
++ }
++
++ _wapi_handle_ref (mutex);
++
++ g_ptr_array_add (thread_handle->owned_mutexes, mutex);
++}
++
++void _wapi_thread_disown_mutex (gpointer mutex)
++{
++ struct _WapiHandle_thread *thread_handle;
++ gboolean ok;
++ gpointer thread;
++
++ thread = _wapi_thread_handle_from_id (pthread_self ());
++ if (thread == NULL) {
++ g_warning ("%s: error looking up thread by ID", __func__);
++ return;
++ }
++
++ ok = _wapi_lookup_handle (thread, WAPI_HANDLE_THREAD,
++ (gpointer *)&thread_handle);
++ if (ok == FALSE) {
++ g_warning ("%s: error looking up thread handle %p", __func__,
++ thread);
++ return;
++ }
++
++ _wapi_handle_unref (mutex);
++
++ g_ptr_array_remove (thread_handle->owned_mutexes, mutex);
++}
projects / mono.git / commitdiff