-/*
+/*
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
* Copyright (c) 1999-2001 by Hewlett-Packard Company. All rights reserved.
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
-/* Boehm, July 31, 1995 5:02 pm PDT */
+#include "private/gc_pmark.h"
#include <stdio.h>
#include <limits.h>
#include <stdarg.h>
-#ifndef _WIN32_WCE
-#include <signal.h>
-#endif
-#define I_HIDE_POINTERS /* To make GC_call_with_alloc_lock visible */
-#include "private/gc_pmark.h"
+#ifndef MSWINCE
+# include <signal.h>
+#endif
#ifdef GC_SOLARIS_THREADS
# include <sys/syscall.h>
#endif
#if defined(MSWIN32) || defined(MSWINCE)
-# define WIN32_LEAN_AND_MEAN
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN 1
+# endif
# define NOSERVICE
# include <windows.h>
-# include <tchar.h>
#endif
#if defined(UNIX_LIKE) || defined(CYGWIN32)
# include <fcntl.h>
# include <sys/types.h>
# include <sys/stat.h>
-
- int GC_log; /* Forward decl, so we can set it. */
#endif
#ifdef NONSTOP
#if defined(THREADS) && defined(PCR)
# include "il/PCR_IL.h"
- PCR_Th_ML GC_allocate_ml;
+ GC_INNER PCR_Th_ML GC_allocate_ml;
#endif
-/* For other platforms with threads, the lock and possibly */
-/* GC_lock_holder variables are defined in the thread support code. */
+/* For other platforms with threads, the lock and possibly */
+/* GC_lock_holder variables are defined in the thread support code. */
-#if defined(NOSYS) || defined(ECOS)
-#undef STACKBASE
-#endif
-
-/* Dont unnecessarily call GC_register_main_static_data() in case */
-/* dyn_load.c isn't linked in. */
#ifdef DYNAMIC_LOADING
+ /* We need to register the main data segment. Returns TRUE unless */
+ /* this is done implicitly as part of dynamic library registration. */
+ GC_INNER GC_bool GC_register_main_static_data(void);
# define GC_REGISTER_MAIN_STATIC_DATA() GC_register_main_static_data()
#else
+ /* Don't unnecessarily call GC_register_main_static_data() in case */
+ /* dyn_load.c isn't linked in. */
# define GC_REGISTER_MAIN_STATIC_DATA() TRUE
#endif
-GC_FAR struct _GC_arrays GC_arrays /* = { 0 } */;
-
+#ifdef NEED_CANCEL_DISABLE_COUNT
+ __thread unsigned char GC_cancel_disable_count = 0;
+#endif
-GC_bool GC_debugging_started = FALSE;
- /* defined here so we don't have to load debug_malloc.o */
+GC_FAR struct _GC_arrays GC_arrays /* = { 0 } */;
-void (*GC_check_heap) (void) = (void (*) (void))0;
-void (*GC_print_all_smashed) (void) = (void (*) (void))0;
+GC_INNER GC_bool GC_debugging_started = FALSE;
+ /* defined here so we don't have to load debug_malloc.o */
-void (*GC_start_call_back) (void) = (void (*) (void))0;
+GC_INNER void (*GC_check_heap)(void) = 0;
+GC_INNER void (*GC_print_all_smashed)(void) = 0;
ptr_t GC_stackbottom = 0;
GC_bool GC_dont_precollect = 0;
-GC_bool GC_quiet = 0;
+GC_bool GC_quiet = 0; /* used also in pcr_interface.c */
#ifndef SMALL_CONFIG
GC_bool GC_print_stats = 0;
#endif
-GC_bool GC_print_back_height = 0;
+GC_INNER GC_bool GC_print_back_height = 0;
#ifndef NO_DEBUGGING
- GC_bool GC_dump_regularly = 0; /* Generate regular debugging dumps. */
+ GC_INNER GC_bool GC_dump_regularly = 0;
+ /* Generate regular debugging dumps. */
#endif
#ifdef KEEP_BACK_PTRS
- long GC_backtraces = 0; /* Number of random backtraces to */
- /* generate for each GC. */
+ GC_INNER long GC_backtraces = 0;
+ /* Number of random backtraces to generate for each GC. */
#endif
#ifdef FIND_LEAK
int GC_all_interior_pointers = 0;
#endif
-long GC_large_alloc_warn_interval = 5;
- /* Interval between unsuppressed warnings. */
+#ifdef GC_FORCE_UNMAP_ON_GCOLLECT
+ /* Has no effect unless USE_MUNMAP. */
+ /* Has no effect on implicitly-initiated garbage collections. */
+ GC_INNER GC_bool GC_force_unmap_on_gcollect = TRUE;
+#else
+ GC_INNER GC_bool GC_force_unmap_on_gcollect = FALSE;
+#endif
-long GC_large_alloc_warn_suppressed = 0;
- /* Number of warnings suppressed so far. */
+#ifndef GC_LARGE_ALLOC_WARN_INTERVAL
+# define GC_LARGE_ALLOC_WARN_INTERVAL 5
+#endif
+GC_INNER long GC_large_alloc_warn_interval = GC_LARGE_ALLOC_WARN_INTERVAL;
+ /* Interval between unsuppressed warnings. */
/*ARGSUSED*/
STATIC void * GC_CALLBACK GC_default_oom_fn(size_t bytes_requested)
return(0);
}
+/* All accesses to it should be synchronized to avoid data races. */
GC_oom_func GC_oom_fn = GC_default_oom_fn;
-/* Set things up so that GC_size_map[i] >= granules(i), */
-/* but not too much bigger */
-/* and so that size_map contains relatively few distinct entries */
-/* This was originally stolen from Russ Atkinson's Cedar */
-/* quantization algorithm (but we precompute it). */
+/* Set things up so that GC_size_map[i] >= granules(i), */
+/* but not too much bigger */
+/* and so that size_map contains relatively few distinct entries */
+/* This was originally stolen from Russ Atkinson's Cedar */
+/* quantization algorithm (but we precompute it). */
STATIC void GC_init_size_map(void)
{
int i;
- /* Map size 0 to something bigger. */
- /* This avoids problems at lower levels. */
+ /* Map size 0 to something bigger. */
+ /* This avoids problems at lower levels. */
GC_size_map[0] = 1;
for (i = 1; i <= GRANULES_TO_BYTES(TINY_FREELISTS-1) - EXTRA_BYTES; i++) {
GC_size_map[i] = ROUNDED_UP_GRANULES(i);
# ifndef _MSC_VER
GC_ASSERT(GC_size_map[i] < TINY_FREELISTS);
- /* Seems to tickle bug in VC++ 2008 for AMD64 */
-# endif
+ /* Seems to tickle bug in VC++ 2008 for AMD64 */
+# endif
}
/* We leave the rest of the array to be filled in on demand. */
}
/* Fill in additional entries in GC_size_map, including the ith one */
-/* We assume the ith entry is currently 0. */
+/* We assume the ith entry is currently 0. */
/* Note that a filled in section of the array ending at n always */
-/* has length at least n/4. */
-void GC_extend_size_map(size_t i)
+/* has length at least n/4. */
+GC_INNER void GC_extend_size_map(size_t i)
{
size_t orig_granule_sz = ROUNDED_UP_GRANULES(i);
size_t granule_sz = orig_granule_sz;
size_t byte_sz = GRANULES_TO_BYTES(granule_sz);
- /* The size we try to preserve. */
- /* Close to i, unless this would */
- /* introduce too many distinct sizes. */
+ /* The size we try to preserve. */
+ /* Close to i, unless this would */
+ /* introduce too many distinct sizes. */
size_t smaller_than_i = byte_sz - (byte_sz >> 3);
size_t much_smaller_than_i = byte_sz - (byte_sz >> 2);
- size_t low_limit; /* The lowest indexed entry we */
- /* initialize. */
+ size_t low_limit; /* The lowest indexed entry we */
+ /* initialize. */
size_t j;
-
+
if (GC_size_map[smaller_than_i] == 0) {
low_limit = much_smaller_than_i;
while (GC_size_map[low_limit] != 0) low_limit++;
granule_sz += granule_sz >> 3;
if (granule_sz < orig_granule_sz) granule_sz = orig_granule_sz;
}
- /* For these larger sizes, we use an even number of granules. */
- /* This makes it easier to, for example, construct a 16byte-aligned */
- /* allocator even if GRANULE_BYTES is 8. */
+ /* For these larger sizes, we use an even number of granules. */
+ /* This makes it easier to, for example, construct a 16byte-aligned */
+ /* allocator even if GRANULE_BYTES is 8. */
granule_sz += 1;
granule_sz &= ~1;
if (granule_sz > MAXOBJGRANULES) {
granule_sz = MAXOBJGRANULES;
}
- /* If we can fit the same number of larger objects in a block, */
- /* do so. */
+ /* If we can fit the same number of larger objects in a block, */
+ /* do so. */
{
size_t number_of_objs = HBLK_GRANULES/granule_sz;
granule_sz = HBLK_GRANULES/number_of_objs;
- granule_sz &= ~1;
+ granule_sz &= ~1;
}
byte_sz = GRANULES_TO_BYTES(granule_sz);
- /* We may need one extra byte; */
- /* don't always fill in GC_size_map[byte_sz] */
+ /* We may need one extra byte; */
+ /* don't always fill in GC_size_map[byte_sz] */
byte_sz -= EXTRA_BYTES;
- for (j = low_limit; j <= byte_sz; j++) GC_size_map[j] = granule_sz;
+ for (j = low_limit; j <= byte_sz; j++) GC_size_map[j] = granule_sz;
}
* sections of the stack whenever we get control.
*/
# ifdef THREADS
-# define BIG_CLEAR_SIZE 2048 /* Clear this much now and then. */
-# define SMALL_CLEAR_SIZE 256 /* Clear this much every time. */
+# define BIG_CLEAR_SIZE 2048 /* Clear this much now and then. */
+# define SMALL_CLEAR_SIZE 256 /* Clear this much every time. */
# else
STATIC word GC_stack_last_cleared = 0; /* GC_no when we last did this */
- STATIC ptr_t GC_min_sp; /* Coolest stack pointer value from which */
- /* we've already cleared the stack. */
- STATIC ptr_t GC_high_water;
- /* "hottest" stack pointer value we have seen */
- /* recently. Degrades over time. */
- STATIC word GC_bytes_allocd_at_reset;
+ STATIC ptr_t GC_min_sp = NULL;
+ /* Coolest stack pointer value from which */
+ /* we've already cleared the stack. */
+ STATIC ptr_t GC_high_water = NULL;
+ /* "hottest" stack pointer value we have seen */
+ /* recently. Degrades over time. */
+ STATIC word GC_bytes_allocd_at_reset = 0;
# define DEGRADE_RATE 50
# endif
# define CLEAR_SIZE 213 /* Granularity for GC_clear_stack_inner */
#if defined(ASM_CLEAR_CODE)
- extern void *GC_clear_stack_inner(void *, ptr_t);
-#else
-/* Clear the stack up to about limit. Return arg. */
-/*ARGSUSED*/
-void * GC_clear_stack_inner(void *arg, ptr_t limit)
-{
+ void *GC_clear_stack_inner(void *, ptr_t);
+#else
+ /* Clear the stack up to about limit. Return arg. This function is */
+ /* not static because it could also be errorneously defined in .S */
+ /* file, so this error would be caught by the linker. */
+ /*ARGSUSED*/
+ void * GC_clear_stack_inner(void *arg, ptr_t limit)
+ {
word dummy[CLEAR_SIZE];
-
+
BZERO(dummy, CLEAR_SIZE*sizeof(word));
if ((ptr_t)(dummy) COOLER_THAN limit) {
(void) GC_clear_stack_inner(arg, limit);
}
- /* Make sure the recursive call is not a tail call, and the bzero */
- /* call is not recognized as dead code. */
+ /* Make sure the recursive call is not a tail call, and the bzero */
+ /* call is not recognized as dead code. */
GC_noop1((word)dummy);
return(arg);
-}
+ }
#endif
-/* Clear some of the inaccessible part of the stack. Returns its */
+/* Clear some of the inaccessible part of the stack. Returns its */
/* argument, so it can be used in a tail call position, hence clearing */
-/* another frame. */
-void * GC_clear_stack(void *arg)
+/* another frame. */
+GC_INNER void * GC_clear_stack(void *arg)
{
ptr_t sp = GC_approx_sp(); /* Hotter than actual sp */
# ifdef THREADS
word dummy[SMALL_CLEAR_SIZE];
- static unsigned random_no = 0;
- /* Should be more random than it is ... */
- /* Used to occasionally clear a bigger */
- /* chunk. */
+ static unsigned random_no = 0;
+ /* Should be more random than it is ... */
+ /* Used to occasionally clear a bigger */
+ /* chunk. */
# endif
ptr_t limit;
-
+
# define SLOP 400
- /* Extra bytes we clear every time. This clears our own */
- /* activation record, and should cause more frequent */
- /* clearing near the cold end of the stack, a good thing. */
+ /* Extra bytes we clear every time. This clears our own */
+ /* activation record, and should cause more frequent */
+ /* clearing near the cold end of the stack, a good thing. */
# define GC_SLOP 4000
- /* We make GC_high_water this much hotter than we really saw */
- /* saw it, to cover for GC noise etc. above our current frame. */
+ /* We make GC_high_water this much hotter than we really saw */
+ /* saw it, to cover for GC noise etc. above our current frame. */
# define CLEAR_THRESHOLD 100000
- /* We restart the clearing process after this many bytes of */
- /* allocation. Otherwise very heavily recursive programs */
- /* with sparse stacks may result in heaps that grow almost */
- /* without bounds. As the heap gets larger, collection */
- /* frequency decreases, thus clearing frequency would decrease, */
- /* thus more junk remains accessible, thus the heap gets */
- /* larger ... */
+ /* We restart the clearing process after this many bytes of */
+ /* allocation. Otherwise very heavily recursive programs */
+ /* with sparse stacks may result in heaps that grow almost */
+ /* without bounds. As the heap gets larger, collection */
+ /* frequency decreases, thus clearing frequency would decrease, */
+ /* thus more junk remains accessible, thus the heap gets */
+ /* larger ... */
# ifdef THREADS
if (++random_no % 13 == 0) {
- limit = sp;
- MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word));
- limit = (ptr_t)((word)limit & ~0xf);
- /* Make it sufficiently aligned for assembly */
- /* implementations of GC_clear_stack_inner. */
- return GC_clear_stack_inner(arg, limit);
+ limit = sp;
+ MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word));
+ limit = (ptr_t)((word)limit & ~0xf);
+ /* Make it sufficiently aligned for assembly */
+ /* implementations of GC_clear_stack_inner. */
+ return GC_clear_stack_inner(arg, limit);
} else {
- BZERO(dummy, SMALL_CLEAR_SIZE*sizeof(word));
- return arg;
+ BZERO(dummy, SMALL_CLEAR_SIZE*sizeof(word));
+ return arg;
}
# else
if (GC_gc_no > GC_stack_last_cleared) {
MAKE_HOTTER(limit, SLOP);
if (sp COOLER_THAN limit) {
limit = (ptr_t)((word)limit & ~0xf);
- /* Make it sufficiently aligned for assembly */
- /* implementations of GC_clear_stack_inner. */
+ /* Make it sufficiently aligned for assembly */
+ /* implementations of GC_clear_stack_inner. */
GC_min_sp = sp;
return(GC_clear_stack_inner(arg, limit));
} else if (GC_bytes_allocd - GC_bytes_allocd_at_reset > CLEAR_THRESHOLD) {
- /* Restart clearing process, but limit how much clearing we do. */
- GC_min_sp = sp;
- MAKE_HOTTER(GC_min_sp, CLEAR_THRESHOLD/4);
- if (GC_min_sp HOTTER_THAN GC_high_water) GC_min_sp = GC_high_water;
- GC_bytes_allocd_at_reset = GC_bytes_allocd;
- }
+ /* Restart clearing process, but limit how much clearing we do. */
+ GC_min_sp = sp;
+ MAKE_HOTTER(GC_min_sp, CLEAR_THRESHOLD/4);
+ if (GC_min_sp HOTTER_THAN GC_high_water) GC_min_sp = GC_high_water;
+ GC_bytes_allocd_at_reset = GC_bytes_allocd;
+ }
return(arg);
# endif
}
-/* Return a pointer to the base address of p, given a pointer to a */
-/* an address within an object. Return 0 o.w. */
+/* Return a pointer to the base address of p, given a pointer to a */
+/* an address within an object. Return 0 o.w. */
GC_API void * GC_CALL GC_base(void * p)
{
ptr_t r;
bottom_index *bi;
hdr *candidate_hdr;
ptr_t limit;
-
+
r = p;
if (!GC_is_initialized) return 0;
h = HBLKPTR(r);
GET_BI(r, bi);
candidate_hdr = HDR_FROM_BI(bi, r);
if (candidate_hdr == 0) return(0);
- /* If it's a pointer to the middle of a large object, move it */
- /* to the beginning. */
- while (IS_FORWARDING_ADDR_OR_NIL(candidate_hdr)) {
- h = FORWARDED_ADDR(h,candidate_hdr);
- r = (ptr_t)h;
- candidate_hdr = HDR(h);
- }
+ /* If it's a pointer to the middle of a large object, move it */
+ /* to the beginning. */
+ while (IS_FORWARDING_ADDR_OR_NIL(candidate_hdr)) {
+ h = FORWARDED_ADDR(h,candidate_hdr);
+ r = (ptr_t)h;
+ candidate_hdr = HDR(h);
+ }
if (HBLK_IS_FREE(candidate_hdr)) return(0);
/* Make sure r points to the beginning of the object */
- r = (ptr_t)((word)r & ~(WORDS_TO_BYTES(1) - 1));
+ r = (ptr_t)((word)r & ~(WORDS_TO_BYTES(1) - 1));
{
- size_t offset = HBLKDISPL(r);
- signed_word sz = candidate_hdr -> hb_sz;
- size_t obj_displ = offset % sz;
+ size_t offset = HBLKDISPL(r);
+ signed_word sz = candidate_hdr -> hb_sz;
+ size_t obj_displ = offset % sz;
- r -= obj_displ;
+ r -= obj_displ;
limit = r + sz;
- if (limit > (ptr_t)(h + 1) && sz <= HBLKSIZE) {
- return(0);
- }
- if ((ptr_t)p >= limit) return(0);
- }
+ if (limit > (ptr_t)(h + 1) && sz <= HBLKSIZE) {
+ return(0);
+ }
+ if ((ptr_t)p >= limit) return(0);
+ }
return((void *)r);
}
-/* Return the size of an object, given a pointer to its base. */
-/* (For small objects this also happens to work from interior pointers, */
-/* but that shouldn't be relied upon.) */
-GC_API size_t GC_CALL GC_size(void * p)
+/* Return the size of an object, given a pointer to its base. */
+/* (For small objects this also happens to work from interior pointers, */
+/* but that shouldn't be relied upon.) */
+GC_API size_t GC_CALL GC_size(const void * p)
{
hdr * hhdr = HDR(p);
-
+
return hhdr -> hb_sz;
}
size_t value;
DCL_LOCK_STATE;
LOCK();
- /* ignore the memory space returned to OS (i.e. count only the */
- /* space owned by the garbage collector) */
+ /* ignore the memory space returned to OS (i.e. count only the */
+ /* space owned by the garbage collector) */
value = (size_t)(GC_heapsize - GC_unmapped_bytes);
UNLOCK();
return value;
return value;
}
+/* The _inner versions assume the caller holds the allocation lock. */
+/* Declared in gc_mark.h (where other public "inner" functions reside). */
+GC_API size_t GC_CALL GC_get_heap_size_inner(void)
+{
+ return (size_t)(GC_heapsize - GC_unmapped_bytes);
+}
+
+GC_API size_t GC_CALL GC_get_free_bytes_inner(void)
+{
+ return (size_t)(GC_large_free_bytes - GC_unmapped_bytes);
+}
+
GC_API size_t GC_CALL GC_get_unmapped_bytes(void)
{
# ifdef USE_MUNMAP
return value;
}
-GC_bool GC_is_initialized = FALSE;
-
-# if defined(PARALLEL_MARK) || defined(THREAD_LOCAL_ALLOC)
- extern void GC_init_parallel(void);
-# endif /* PARALLEL_MARK || THREAD_LOCAL_ALLOC */
+#ifdef THREADS
+ GC_API int GC_CALL GC_get_suspend_signal(void)
+ {
+# ifdef SIG_SUSPEND
+ return SIG_SUSPEND;
+# else
+ return -1;
+# endif
+ }
+#endif /* THREADS */
-/* FIXME: The GC_init/GC_init_inner distinction should go away. */
-GC_API void GC_CALL GC_init(void)
-{
- /* LOCK(); -- no longer does anything this early. */
- GC_init_inner();
- /* UNLOCK(); */
-}
+GC_INNER GC_bool GC_is_initialized = FALSE;
#if (defined(MSWIN32) || defined(MSWINCE)) && defined(THREADS)
- CRITICAL_SECTION GC_write_cs;
+ GC_INNER CRITICAL_SECTION GC_write_cs;
#endif
#ifdef MSWIN32
- extern void GC_init_win32(void);
+ GC_INNER void GC_init_win32(void);
#endif
-extern void GC_setpagesize(void);
+GC_INNER void GC_setpagesize(void);
STATIC void GC_exit_check(void)
{
}
#ifdef SEARCH_FOR_DATA_START
- extern void GC_init_linux_data_start(void);
+ GC_INNER void GC_init_linux_data_start(void);
#endif
#ifdef UNIX_LIKE
-extern void GC_set_and_save_fault_handler(void (*handler)(int));
+ GC_INNER void GC_set_and_save_fault_handler(void (*handler)(int));
-static void looping_handler(int sig)
-{
+ static void looping_handler(int sig)
+ {
GC_err_printf("Caught signal %d: looping in handler\n", sig);
- for(;;);
-}
+ for (;;) {}
+ }
-static GC_bool installed_looping_handler = FALSE;
+ static GC_bool installed_looping_handler = FALSE;
-static void maybe_install_looping_handler(void)
-{
- /* Install looping handler before the write fault handler, so we */
- /* handle write faults correctly. */
- if (!installed_looping_handler && 0 != GETENV("GC_LOOP_ON_ABORT")) {
- GC_set_and_save_fault_handler(looping_handler);
- installed_looping_handler = TRUE;
- }
-}
+ static void maybe_install_looping_handler(void)
+ {
+ /* Install looping handler before the write fault handler, so we */
+ /* handle write faults correctly. */
+ if (!installed_looping_handler && 0 != GETENV("GC_LOOP_ON_ABORT")) {
+ GC_set_and_save_fault_handler(looping_handler);
+ installed_looping_handler = TRUE;
+ }
+ }
#else /* !UNIX_LIKE */
-
# define maybe_install_looping_handler()
+#endif
+#if defined(DYNAMIC_LOADING) && defined(DARWIN)
+ GC_INNER void GC_init_dyld(void);
#endif
-#if defined(GC_PTHREADS) || defined(GC_WIN32_THREADS)
- void GC_thr_init(void);
+#if defined(NETBSD) && defined(__ELF__)
+ GC_INNER void GC_init_netbsd_elf(void);
#endif
-void GC_init_inner(void)
+#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32) && !defined(MSWINCE)
+ STATIC int GC_log = 2;
+#endif
+
+GC_API void GC_CALL GC_init(void)
{
+ /* LOCK(); -- no longer does anything this early. */
# if !defined(THREADS) && defined(GC_ASSERTIONS)
word dummy;
# endif
# ifdef GC_INITIAL_HEAP_SIZE
- word initial_heap_sz = divHBLKSZ(GC_INITIAL_HEAP_SIZE);
+ word initial_heap_sz = divHBLKSZ(GC_INITIAL_HEAP_SIZE);
# else
- word initial_heap_sz = (word)MINHINCR;
+ word initial_heap_sz = (word)MINHINCR;
# endif
-
+ IF_CANCEL(int cancel_state;)
+
if (GC_is_initialized) return;
+ DISABLE_CANCEL(cancel_state);
/* Note that although we are nominally called with the */
- /* allocation lock held, the allocation lock is now */
+ /* allocation lock held, the allocation lock is now */
/* only really acquired once a second thread is forked.*/
/* And the initialization code needs to run before */
/* then. Thus we really don't hold any locks, and can */
- /* in fact safely initialize them here. */
+ /* in fact safely initialize them here. */
# ifdef THREADS
GC_ASSERT(!GC_need_to_lock);
# endif
# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS)
- if (!GC_is_initialized) {
+ {
+# ifndef MSWINCE
BOOL (WINAPI *pfn) (LPCRITICAL_SECTION, DWORD) = NULL;
- HMODULE hK32 = GetModuleHandleA("kernel32.dll");
+ HMODULE hK32 = GetModuleHandle(TEXT("kernel32.dll"));
if (hK32)
- pfn = (BOOL (WINAPI *) (LPCRITICAL_SECTION, DWORD))
- GetProcAddress (hK32,
- "InitializeCriticalSectionAndSpinCount");
+ pfn = (BOOL (WINAPI *) (LPCRITICAL_SECTION, DWORD))
+ GetProcAddress (hK32,
+ "InitializeCriticalSectionAndSpinCount");
if (pfn)
pfn(&GC_allocate_ml, 4000);
else
- InitializeCriticalSection (&GC_allocate_ml);
- }
-#endif /* MSWIN32 */
+# endif /* !MSWINCE */
+ /* else */ InitializeCriticalSection (&GC_allocate_ml);
+ }
+# endif /* GC_WIN32_THREADS */
# if (defined(MSWIN32) || defined(MSWINCE)) && defined(THREADS)
InitializeCriticalSection(&GC_write_cs);
# endif
-# if (!defined(SMALL_CONFIG))
- if (0 != GETENV("GC_PRINT_STATS")) {
- GC_print_stats = 1;
- }
- if (0 != GETENV("GC_PRINT_VERBOSE_STATS")) {
+# ifndef SMALL_CONFIG
+# ifdef GC_PRINT_VERBOSE_STATS
+ /* This is useful for debugging and profiling on platforms with */
+ /* missing getenv() (like WinCE). */
GC_print_stats = VERBOSE;
- }
+# else
+ if (0 != GETENV("GC_PRINT_VERBOSE_STATS")) {
+ GC_print_stats = VERBOSE;
+ } else if (0 != GETENV("GC_PRINT_STATS")) {
+ GC_print_stats = 1;
+ }
+# endif
# if defined(UNIX_LIKE) || defined(CYGWIN32)
{
- char * file_name = GETENV("GC_LOG_FILE");
+ char * file_name = GETENV("GC_LOG_FILE");
if (0 != file_name) {
- int log_d = open(file_name, O_CREAT|O_WRONLY|O_APPEND, 0666);
- if (log_d < 0) {
- GC_log_printf("Failed to open %s as log file\n", file_name);
- } else {
- GC_log = log_d;
- }
- }
- }
+ int log_d = open(file_name, O_CREAT|O_WRONLY|O_APPEND, 0666);
+ if (log_d < 0) {
+ GC_err_printf("Failed to open %s as log file\n", file_name);
+ } else {
+ GC_log = log_d;
+ }
+ }
+ }
# endif
-# endif
+# endif /* !SMALL_CONFIG */
# ifndef NO_DEBUGGING
if (0 != GETENV("GC_DUMP_REGULARLY")) {
GC_dump_regularly = 1;
char * backtraces_string = GETENV("GC_BACKTRACES");
if (0 != backtraces_string) {
GC_backtraces = atol(backtraces_string);
- if (backtraces_string[0] == '\0') GC_backtraces = 1;
+ if (backtraces_string[0] == '\0') GC_backtraces = 1;
}
}
# endif
char * addr_string = GETENV("GC_TRACE");
if (0 != addr_string) {
# ifndef ENABLE_TRACE
- WARN("Tracing not enabled: Ignoring GC_TRACE value\n", 0);
+ WARN("Tracing not enabled: Ignoring GC_TRACE value\n", 0);
# else
- word addr = (word)STRTOULL(addr_string, NULL, 16);
- if (addr < 0x1000)
- WARN("Unlikely trace address: %p\n", addr);
- GC_trace_addr = (ptr_t)addr;
-# endif
+ word addr = (word)STRTOULL(addr_string, NULL, 16);
+ if (addr < 0x1000)
+ WARN("Unlikely trace address: %p\n", addr);
+ GC_trace_addr = (ptr_t)addr;
+# endif
}
}
-# ifndef SMALL_CONFIG
+# ifndef GC_DISABLE_INCREMENTAL
{
- char * time_limit_string = GETENV("GC_PAUSE_TIME_TARGET");
- if (0 != time_limit_string) {
- long time_limit = atol(time_limit_string);
- if (time_limit < 5) {
- WARN("GC_PAUSE_TIME_TARGET environment variable value too small "
- "or bad syntax: Ignoring\n", 0);
- } else {
- GC_time_limit = time_limit;
- }
- }
+ char * time_limit_string = GETENV("GC_PAUSE_TIME_TARGET");
+ if (0 != time_limit_string) {
+ long time_limit = atol(time_limit_string);
+ if (time_limit < 5) {
+ WARN("GC_PAUSE_TIME_TARGET environment variable value too small "
+ "or bad syntax: Ignoring\n", 0);
+ } else {
+ GC_time_limit = time_limit;
+ }
+ }
}
+# endif
+# ifndef SMALL_CONFIG
{
- char * full_freq_string = GETENV("GC_FULL_FREQUENCY");
- if (full_freq_string != NULL) {
- int full_freq = atoi(full_freq_string);
- if (full_freq > 0)
- GC_full_freq = full_freq;
- }
+ char * full_freq_string = GETENV("GC_FULL_FREQUENCY");
+ if (full_freq_string != NULL) {
+ int full_freq = atoi(full_freq_string);
+ if (full_freq > 0)
+ GC_full_freq = full_freq;
+ }
}
# endif
{
if (0 != interval_string) {
long interval = atol(interval_string);
if (interval <= 0) {
- WARN("GC_LARGE_ALLOC_WARN_INTERVAL environment variable has "
- "bad value: Ignoring\n", 0);
+ WARN("GC_LARGE_ALLOC_WARN_INTERVAL environment variable has "
+ "bad value: Ignoring\n", 0);
} else {
- GC_large_alloc_warn_interval = interval;
+ GC_large_alloc_warn_interval = interval;
}
}
}
{
- char * space_divisor_string = GETENV("GC_FREE_SPACE_DIVISOR");
- if (space_divisor_string != NULL) {
- int space_divisor = atoi(space_divisor_string);
- if (space_divisor > 0)
- GC_free_space_divisor = (GC_word)space_divisor;
- }
+ char * space_divisor_string = GETENV("GC_FREE_SPACE_DIVISOR");
+ if (space_divisor_string != NULL) {
+ int space_divisor = atoi(space_divisor_string);
+ if (space_divisor > 0)
+ GC_free_space_divisor = (GC_word)space_divisor;
+ }
}
+# ifdef USE_MUNMAP
+ {
+ char * string = GETENV("GC_UNMAP_THRESHOLD");
+ if (string != NULL) {
+ if (*string == '0' && *(string + 1) == '\0') {
+ /* "0" is used to disable unmapping. */
+ GC_unmap_threshold = 0;
+ } else {
+ int unmap_threshold = atoi(string);
+ if (unmap_threshold > 0)
+ GC_unmap_threshold = unmap_threshold;
+ }
+ }
+ }
+ {
+ char * string = GETENV("GC_FORCE_UNMAP_ON_GCOLLECT");
+ if (string != NULL) {
+ if (*string == '0' && *(string + 1) == '\0') {
+ /* "0" is used to turn off the mode. */
+ GC_force_unmap_on_gcollect = FALSE;
+ } else {
+ GC_force_unmap_on_gcollect = TRUE;
+ }
+ }
+ }
+# endif
maybe_install_looping_handler();
- /* Adjust normal object descriptor for extra allocation. */
+ /* Adjust normal object descriptor for extra allocation. */
if (ALIGNMENT > GC_DS_TAGS && EXTRA_BYTES != 0) {
GC_obj_kinds[NORMAL].ok_descriptor = ((word)(-ALIGNMENT) | GC_DS_LENGTH);
}
GC_setpagesize();
- GC_exclude_static_roots(beginGC_arrays, endGC_arrays);
- GC_exclude_static_roots(beginGC_obj_kinds, endGC_obj_kinds);
+ GC_exclude_static_roots_inner(beginGC_arrays, endGC_arrays);
+ GC_exclude_static_roots_inner(beginGC_obj_kinds, endGC_obj_kinds);
# ifdef SEPARATE_GLOBALS
- GC_exclude_static_roots(beginGC_objfreelist, endGC_objfreelist);
- GC_exclude_static_roots(beginGC_aobjfreelist, endGC_aobjfreelist);
+ GC_exclude_static_roots_inner(beginGC_objfreelist, endGC_objfreelist);
+ GC_exclude_static_roots_inner(beginGC_aobjfreelist, endGC_aobjfreelist);
# endif
# ifdef MSWIN32
- GC_init_win32();
+ GC_init_win32();
# endif
# if defined(USE_PROC_FOR_LIBRARIES) && defined(GC_LINUX_THREADS)
- WARN("USE_PROC_FOR_LIBRARIES + GC_LINUX_THREADS performs poorly.\n", 0);
- /* If thread stacks are cached, they tend to be scanned in */
- /* entirety as part of the root set. This wil grow them to */
- /* maximum size, and is generally not desirable. */
+ WARN("USE_PROC_FOR_LIBRARIES + GC_LINUX_THREADS performs poorly.\n", 0);
+ /* If thread stacks are cached, they tend to be scanned in */
+ /* entirety as part of the root set. This wil grow them to */
+ /* maximum size, and is generally not desirable. */
# endif
# if defined(SEARCH_FOR_DATA_START)
- GC_init_linux_data_start();
+ GC_init_linux_data_start();
# endif
-# if (defined(NETBSD) || defined(OPENBSD)) && defined(__ELF__)
- GC_init_netbsd_elf();
+# if defined(NETBSD) && defined(__ELF__)
+ GC_init_netbsd_elf();
# endif
# if !defined(THREADS) || defined(GC_PTHREADS) || defined(GC_WIN32_THREADS) \
- || defined(GC_SOLARIS_THREADS)
+ || defined(GC_SOLARIS_THREADS)
if (GC_stackbottom == 0) {
- GC_stackbottom = GC_get_main_stack_base();
+ GC_stackbottom = GC_get_main_stack_base();
# if (defined(LINUX) || defined(HPUX)) && defined(IA64)
- GC_register_stackbottom = GC_get_register_stack_base();
+ GC_register_stackbottom = GC_get_register_stack_base();
# endif
} else {
# if (defined(LINUX) || defined(HPUX)) && defined(IA64)
- if (GC_register_stackbottom == 0) {
- WARN("GC_register_stackbottom should be set with GC_stackbottom\n", 0);
- /* The following may fail, since we may rely on */
- /* alignment properties that may not hold with a user set */
- /* GC_stackbottom. */
- GC_register_stackbottom = GC_get_register_stack_base();
- }
-# endif
+ if (GC_register_stackbottom == 0) {
+ WARN("GC_register_stackbottom should be set with GC_stackbottom\n", 0);
+ /* The following may fail, since we may rely on */
+ /* alignment properties that may not hold with a user set */
+ /* GC_stackbottom. */
+ GC_register_stackbottom = GC_get_register_stack_base();
+ }
+# endif
}
# endif
GC_STATIC_ASSERT(sizeof (ptr_t) == sizeof(word));
/* word should be unsigned */
# endif
# if !defined(__BORLANDC__) /* Workaround for Borland C */
- GC_STATIC_ASSERT((ptr_t)(word)(-1) > (ptr_t)0);
- /* Ptr_t comparisons should behave as unsigned comparisons. */
+ GC_STATIC_ASSERT((ptr_t)(word)(-1) > (ptr_t)0);
+ /* Ptr_t comparisons should behave as unsigned comparisons. */
# endif
GC_STATIC_ASSERT((signed_word)(-1) < (signed_word)0);
-# if !defined(SMALL_CONFIG)
+# ifndef GC_DISABLE_INCREMENTAL
if (GC_incremental || 0 != GETENV("GC_ENABLE_INCREMENTAL")) {
- /* This used to test for !GC_no_win32_dlls. Why? */
- GC_setpagesize();
- /* For GWW_MPROTECT on Win32, this needs to happen before any */
- /* heap memory is allocated. */
+ /* For GWW_MPROTECT on Win32, this needs to happen before any */
+ /* heap memory is allocated. */
GC_dirty_init();
GC_ASSERT(GC_bytes_allocd == 0)
- GC_incremental = TRUE;
+ GC_incremental = TRUE;
}
-# endif /* !SMALL_CONFIG */
-
- /* Add initial guess of root sets. Do this first, since sbrk(0) */
- /* might be used. */
+# endif
+
+ /* Add initial guess of root sets. Do this first, since sbrk(0) */
+ /* might be used. */
if (GC_REGISTER_MAIN_STATIC_DATA()) GC_register_data_segments();
GC_init_headers();
GC_bl_init();
GC_mark_init();
{
- char * sz_str = GETENV("GC_INITIAL_HEAP_SIZE");
- if (sz_str != NULL) {
- initial_heap_sz = (word)STRTOULL(sz_str, NULL, 10);
- if (initial_heap_sz <= MINHINCR * HBLKSIZE) {
- WARN("Bad initial heap size %s - ignoring it.\n",
- sz_str);
- }
- initial_heap_sz = divHBLKSZ(initial_heap_sz);
- }
+ char * sz_str = GETENV("GC_INITIAL_HEAP_SIZE");
+ if (sz_str != NULL) {
+ initial_heap_sz = (word)STRTOULL(sz_str, NULL, 10);
+ if (initial_heap_sz <= MINHINCR * HBLKSIZE) {
+ WARN("Bad initial heap size %s - ignoring it.\n",
+ sz_str);
+ }
+ initial_heap_sz = divHBLKSZ(initial_heap_sz);
+ }
}
{
- char * sz_str = GETENV("GC_MAXIMUM_HEAP_SIZE");
- if (sz_str != NULL) {
- word max_heap_sz = (word)STRTOULL(sz_str, NULL, 10);
- if (max_heap_sz < initial_heap_sz * HBLKSIZE) {
- WARN("Bad maximum heap size %s - ignoring it.\n",
- sz_str);
- }
- if (0 == GC_max_retries) GC_max_retries = 2;
- GC_set_max_heap_size(max_heap_sz);
- }
+ char * sz_str = GETENV("GC_MAXIMUM_HEAP_SIZE");
+ if (sz_str != NULL) {
+ word max_heap_sz = (word)STRTOULL(sz_str, NULL, 10);
+ if (max_heap_sz < initial_heap_sz * HBLKSIZE) {
+ WARN("Bad maximum heap size %s - ignoring it.\n",
+ sz_str);
+ }
+ if (0 == GC_max_retries) GC_max_retries = 2;
+ GC_set_max_heap_size(max_heap_sz);
+ }
}
if (!GC_expand_hp_inner(initial_heap_sz)) {
GC_err_printf("Can't start up: not enough memory\n");
GC_register_displacement_inner(0L);
# if defined(GC_LINUX_THREADS) && defined(REDIRECT_MALLOC)
if (!GC_all_interior_pointers) {
- /* TLS ABI uses pointer-sized offsets for dtv. */
+ /* TLS ABI uses pointer-sized offsets for dtv. */
GC_register_displacement_inner(sizeof(void *));
}
# endif
/* Get black list set up and/or incremental GC started */
if (!GC_dont_precollect || GC_incremental) GC_gcollect_inner();
# ifdef STUBBORN_ALLOC
- GC_stubborn_init();
+ GC_stubborn_init();
# endif
/* Convince lint that some things are used */
# ifdef LINT
{
- extern char * GC_copyright[];
- extern int GC_read();
- extern void GC_register_finalizer_no_order();
-
- GC_noop(GC_copyright, GC_find_header,
- GC_push_one, GC_call_with_alloc_lock, GC_read,
- GC_dont_expand,
-# ifndef NO_DEBUGGING
- GC_dump,
-# endif
+ extern char * const GC_copyright[];
+ GC_noop(GC_copyright, GC_find_header, GC_push_one,
+ GC_call_with_alloc_lock, GC_dont_expand,
+# ifndef NO_DEBUGGING
+ GC_dump,
+# endif
GC_register_finalizer_no_order);
}
# endif
- /* The rest of this again assumes we don't really hold */
- /* the allocation lock. */
+ /* The rest of this again assumes we don't really hold */
+ /* the allocation lock. */
# if defined(PARALLEL_MARK) || defined(THREAD_LOCAL_ALLOC)
- /* Make sure marker threads are started and thread local */
- /* allocation is initialized, in case we didn't get */
- /* called from GC_init_parallel(); */
- {
- GC_init_parallel();
- }
+ /* Make sure marker threads are started and thread local */
+ /* allocation is initialized, in case we didn't get */
+ /* called from GC_init_parallel. */
+ GC_init_parallel();
# endif /* PARALLEL_MARK || THREAD_LOCAL_ALLOC */
# if defined(DYNAMIC_LOADING) && defined(DARWIN)
- {
- /* This must be called WITHOUT the allocation lock held
- and before any threads are created */
- extern void GC_init_dyld();
+ /* This must be called WITHOUT the allocation lock held */
+ /* and before any threads are created. */
GC_init_dyld();
- }
# endif
+ RESTORE_CANCEL(cancel_state);
}
GC_API void GC_CALL GC_enable_incremental(void)
{
-# if !defined(SMALL_CONFIG) && !defined(KEEP_BACK_PTRS)
- /* If we are keeping back pointers, the GC itself dirties all */
- /* pages on which objects have been marked, making */
- /* incremental GC pointless. */
- if (!GC_find_leak && 0 == GETENV("GC_DISABLE_INCREMENTAL")) {
+# if !defined(GC_DISABLE_INCREMENTAL) && !defined(KEEP_BACK_PTRS)
DCL_LOCK_STATE;
-
- LOCK();
- if (GC_incremental) goto out;
- GC_setpagesize();
- /* if (GC_no_win32_dlls) goto out; Should be win32S test? */
- maybe_install_looping_handler(); /* Before write fault handler! */
- GC_incremental = TRUE;
- if (!GC_is_initialized) {
- GC_init_inner();
- } else {
- GC_dirty_init();
- }
- if (!GC_dirty_maintained) goto out;
- if (GC_dont_gc) {
- /* Can't easily do it. */
- UNLOCK();
- return;
+ /* If we are keeping back pointers, the GC itself dirties all */
+ /* pages on which objects have been marked, making */
+ /* incremental GC pointless. */
+ if (!GC_find_leak && 0 == GETENV("GC_DISABLE_INCREMENTAL")) {
+ LOCK();
+ if (!GC_incremental) {
+ GC_setpagesize();
+ /* if (GC_no_win32_dlls) goto out; Should be win32S test? */
+ maybe_install_looping_handler(); /* Before write fault handler! */
+ GC_incremental = TRUE;
+ if (!GC_is_initialized) {
+ GC_init();
+ } else {
+ GC_dirty_init();
+ }
+ if (GC_dirty_maintained && !GC_dont_gc) {
+ /* Can't easily do it if GC_dont_gc. */
+ if (GC_bytes_allocd > 0) {
+ /* There may be unmarked reachable objects. */
+ GC_gcollect_inner();
+ }
+ /* else we're OK in assuming everything's */
+ /* clean since nothing can point to an */
+ /* unmarked object. */
+ GC_read_dirty();
+ }
+ }
+ UNLOCK();
+ return;
}
- if (GC_bytes_allocd > 0) {
- /* There may be unmarked reachable objects */
- GC_gcollect_inner();
- } /* else we're OK in assuming everything's */
- /* clean since nothing can point to an */
- /* unmarked object. */
- GC_read_dirty();
-out:
- UNLOCK();
- } else {
- GC_init();
- }
-# else
- GC_init();
# endif
+ GC_init();
}
#if defined(MSWIN32) || defined(MSWINCE)
-# if defined(_MSC_VER) && defined(_DEBUG)
-# include <crtdbg.h>
-# endif
-# ifdef OLD_WIN32_LOG_FILE
-# define LOG_FILE _T("gc.log")
+
+# if defined(_MSC_VER) && defined(_DEBUG) && !defined(MSWINCE)
+# include <crtdbg.h>
# endif
STATIC HANDLE GC_stdout = 0;
{
# ifdef THREADS
if (GC_is_initialized) {
- DeleteCriticalSection(&GC_write_cs);
+ DeleteCriticalSection(&GC_write_cs);
}
# endif
}
# define IF_NEED_TO_LOCK(x)
#endif
- int GC_write(const char *buf, size_t len)
+#ifndef _MAX_PATH
+# define _MAX_PATH MAX_PATH
+#endif
+
+ STATIC HANDLE GC_CreateLogFile(void)
+ {
+# if !defined(NO_GETENV_WIN32) || !defined(OLD_WIN32_LOG_FILE)
+ TCHAR logPath[_MAX_PATH + 0x10]; /* buffer for path + ext */
+# endif
+ /* Use GetEnvironmentVariable instead of GETENV() for unicode support. */
+# ifndef NO_GETENV_WIN32
+ if (GetEnvironmentVariable(TEXT("GC_LOG_FILE"), logPath,
+ _MAX_PATH + 1) - 1U >= (DWORD)_MAX_PATH)
+# endif
+ {
+ /* Env var not found or its value too long. */
+# ifdef OLD_WIN32_LOG_FILE
+ return CreateFile(TEXT("gc.log"), GENERIC_WRITE, FILE_SHARE_READ,
+ NULL /* lpSecurityAttributes */, CREATE_ALWAYS,
+ FILE_FLAG_WRITE_THROUGH, NULL /* hTemplateFile */);
+# else
+ int len = (int)GetModuleFileName(NULL /* hModule */, logPath,
+ _MAX_PATH + 1);
+ /* If GetModuleFileName() has failed then len is 0. */
+ if (len > 4 && logPath[len - 4] == (TCHAR)'.') {
+ len -= 4; /* strip executable file extension */
+ }
+ /* strcat/wcscat() are deprecated on WinCE, so use memcpy() */
+ memcpy(&logPath[len], TEXT(".gc.log"), sizeof(TEXT(".gc.log")));
+# endif
+ }
+# if !defined(NO_GETENV_WIN32) || !defined(OLD_WIN32_LOG_FILE)
+ return CreateFile(logPath, GENERIC_WRITE, FILE_SHARE_READ,
+ NULL /* lpSecurityAttributes */, CREATE_ALWAYS,
+ GC_print_stats == VERBOSE ? FILE_ATTRIBUTE_NORMAL :
+ /* immediately flush writes unless very verbose */
+ FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH,
+ NULL /* hTemplateFile */);
+# endif
+ }
+
+ STATIC int GC_write(const char *buf, size_t len)
{
BOOL tmp;
DWORD written;
if (len == 0)
- return 0;
+ return 0;
IF_NEED_TO_LOCK(EnterCriticalSection(&GC_write_cs));
+# ifdef THREADS
+ GC_ASSERT(!GC_write_disabled);
+# endif
if (GC_stdout == INVALID_HANDLE_VALUE) {
- IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs));
- return -1;
+ IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs));
+ return -1;
} else if (GC_stdout == 0) {
- char * file_name = GETENV("GC_LOG_FILE");
- char logPath[_MAX_PATH + 5];
-
- if (0 == file_name) {
-# ifdef OLD_WIN32_LOG_FILE
- strcpy(logPath, LOG_FILE);
-# else
- GetModuleFileNameA(NULL, logPath, _MAX_PATH);
- strcat(logPath, ".log");
-# endif
- file_name = logPath;
- }
- GC_stdout = CreateFileA(file_name, GENERIC_WRITE,
- FILE_SHARE_READ,
- NULL, CREATE_ALWAYS, FILE_FLAG_WRITE_THROUGH,
- NULL);
- if (GC_stdout == INVALID_HANDLE_VALUE)
- ABORT("Open of log file failed");
+ GC_stdout = GC_CreateLogFile();
+ /* Ignore open log failure if the collector is built with */
+ /* print_stats always set on. */
+# ifndef GC_PRINT_VERBOSE_STATS
+ if (GC_stdout == INVALID_HANDLE_VALUE)
+ ABORT("Open of log file failed");
+# endif
}
tmp = WriteFile(GC_stdout, buf, (DWORD)len, &written, NULL);
if (!tmp)
- DebugBreak();
+ DebugBreak();
# if defined(_MSC_VER) && defined(_DEBUG)
- _CrtDbgReport(_CRT_WARN, NULL, 0, NULL, "%.*s", len, buf);
+# ifdef MSWINCE
+ /* There is no CrtDbgReport() in WinCE */
+ {
+ WCHAR wbuf[1024];
+ /* Always use Unicode variant of OutputDebugString() */
+ wbuf[MultiByteToWideChar(CP_ACP, 0 /* dwFlags */,
+ buf, len, wbuf,
+ sizeof(wbuf) / sizeof(wbuf[0]) - 1)] = 0;
+ OutputDebugStringW(wbuf);
+ }
+# else
+ _CrtDbgReport(_CRT_WARN, NULL, 0, NULL, "%.*s", len, buf);
+# endif
# endif
IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs));
return tmp ? (int)written : -1;
}
-#endif
+#endif /* MSWIN32 */
#if defined(OS2) || defined(MACOS)
-STATIC FILE * GC_stdout = NULL;
-STATIC FILE * GC_stderr = NULL;
-STATIC FILE * GC_log = NULL;
-STATIC int GC_tmp; /* Should really be local ... */
+ STATIC FILE * GC_stdout = NULL;
+ STATIC FILE * GC_stderr = NULL;
+ STATIC FILE * GC_log = NULL;
STATIC void GC_set_files(void)
{
if (GC_stdout == NULL) {
- GC_stdout = stdout;
+ GC_stdout = stdout;
}
if (GC_stderr == NULL) {
- GC_stderr = stderr;
+ GC_stderr = stderr;
}
if (GC_log == NULL) {
- GC_log = stderr;
+ GC_log = stderr;
}
}
#endif
#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32) && !defined(MSWINCE)
STATIC int GC_stdout = 1;
STATIC int GC_stderr = 2;
- int GC_log = 2;
# if !defined(AMIGA)
# include <unistd.h>
# endif
#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(OS2) \
&& !defined(MACOS) && !defined(ECOS) && !defined(NOSYS)
-int GC_write(int fd, const char *buf, size_t len)
+STATIC int GC_write(int fd, const char *buf, size_t len)
{
- register int bytes_written = 0;
- register int result;
-
+ int bytes_written = 0;
+ int result;
+ IF_CANCEL(int cancel_state;)
+
+ DISABLE_CANCEL(cancel_state);
while (bytes_written < len) {
-# ifdef GC_SOLARIS_THREADS
- result = syscall(SYS_write, fd, buf + bytes_written,
- len - bytes_written);
-# else
- result = write(fd, buf + bytes_written, len - bytes_written);
-# endif
- if (-1 == result) return(result);
- bytes_written += result;
+# ifdef GC_SOLARIS_THREADS
+ result = syscall(SYS_write, fd, buf + bytes_written,
+ len - bytes_written);
+# else
+ result = write(fd, buf + bytes_written, len - bytes_written);
+# endif
+ if (-1 == result) {
+ RESTORE_CANCEL(cancel_state);
+ return(result);
+ }
+ bytes_written += result;
}
+ RESTORE_CANCEL(cancel_state);
return(bytes_written);
}
#endif /* UN*X */
#ifdef ECOS
-int GC_write(int fd, const char *buf, size_t len)
-{
- _Jv_diag_write (buf, len);
- return len;
-}
+ STATIC int GC_write(int fd, const char *buf, size_t len)
+ {
+ /* FIXME: This seems to be defined nowhere at present. */
+ /* _Jv_diag_write(buf, len); */
+ return len;
+ }
#endif
#ifdef NOSYS
-int GC_write(int fd, const char *buf, size_t len)
-{
- /* No writing. */
- return len;
-}
+ STATIC int GC_write(int fd, const char *buf, size_t len)
+ {
+ /* No writing. */
+ return len;
+ }
#endif
# define WRITE(f, buf, len) GC_write(buf, len)
#else
# if defined(OS2) || defined(MACOS)
+ static int fwrite_gc_res; /* Should really be local ... */
# define WRITE(f, buf, len) (GC_set_files(), \
- GC_tmp = fwrite((buf), 1, (len), (f)), \
- fflush(f), GC_tmp)
+ fwrite_gc_res = fwrite((buf), 1, (len), (f)), \
+ fflush(f), fwrite_gc_res)
# else
# define WRITE(f, buf, len) GC_write((f), (buf), (len))
# endif
#define BUFSZ 1024
#ifdef _MSC_VER
-# define vsnprintf _vsnprintf
+# ifdef MSWINCE
+ /* _vsnprintf is deprecated in WinCE */
+# define vsnprintf StringCchVPrintfA
+# else
+# define vsnprintf _vsnprintf
+# endif
#endif
/* A version of printf that is unlikely to call malloc, and is thus safer */
/* to call from the collector in case malloc has been bound to GC_malloc. */
-/* Floating point arguments and formats should be avoided, since fp */
-/* conversion is more likely to allocate. */
-/* Assumes that no more than BUFSZ-1 characters are written at once. */
+/* Floating point arguments and formats should be avoided, since fp */
+/* conversion is more likely to allocate. */
+/* Assumes that no more than BUFSZ-1 characters are written at once. */
void GC_printf(const char *format, ...)
{
va_list args;
char buf[BUFSZ+1];
-
+
va_start(args, format);
if (GC_quiet) return;
buf[BUFSZ] = 0x15;
(void) vsnprintf(buf, BUFSZ, format, args);
va_end(args);
if (buf[BUFSZ] != 0x15) ABORT("GC_printf clobbered stack");
- if (WRITE(GC_stdout, buf, strlen(buf)) < 0) ABORT("write to stdout failed");
+ if (WRITE(GC_stdout, buf, strlen(buf)) < 0)
+ ABORT("write to stdout failed");
}
void GC_err_printf(const char *format, ...)
{
va_list args;
char buf[BUFSZ+1];
-
+
va_start(args, format);
buf[BUFSZ] = 0x15;
(void) vsnprintf(buf, BUFSZ, format, args);
va_end(args);
if (buf[BUFSZ] != 0x15) ABORT("GC_printf clobbered stack");
- if (WRITE(GC_stderr, buf, strlen(buf)) < 0) ABORT("write to stderr failed");
+ if (WRITE(GC_stderr, buf, strlen(buf)) < 0)
+ ABORT("write to stderr failed");
}
void GC_log_printf(const char *format, ...)
{
va_list args;
char buf[BUFSZ+1];
-
+
va_start(args, format);
buf[BUFSZ] = 0x15;
(void) vsnprintf(buf, BUFSZ, format, args);
va_end(args);
if (buf[BUFSZ] != 0x15) ABORT("GC_printf clobbered stack");
- if (WRITE(GC_log, buf, strlen(buf)) < 0) ABORT("write to log failed");
+ if (WRITE(GC_log, buf, strlen(buf)) < 0)
+ ABORT("write to log failed");
}
void GC_err_puts(const char *s)
}
#if defined(LINUX) && !defined(SMALL_CONFIG)
-void GC_err_write(const char *buf, size_t len)
-{
+ GC_INNER void GC_err_write(const char *buf, size_t len)
+ {
if (WRITE(GC_stderr, buf, len) < 0) ABORT("write to stderr failed");
-}
+ }
#endif
STATIC void GC_CALLBACK GC_default_warn_proc(char *msg, GC_word arg)
GC_err_printf(msg, arg);
}
-GC_warn_proc GC_current_warn_proc = GC_default_warn_proc;
+GC_INNER GC_warn_proc GC_current_warn_proc = GC_default_warn_proc;
/* This is recommended for production code (release). */
GC_API void GC_CALLBACK GC_ignore_warn_proc(char *msg, GC_word arg)
GC_ASSERT(p != 0);
# ifdef GC_WIN32_THREADS
# ifdef CYGWIN32
- /* Need explicit GC_INIT call */
+ /* Need explicit GC_INIT call */
GC_ASSERT(GC_is_initialized);
# else
- if (!GC_is_initialized) GC_init();
+ if (!GC_is_initialized) GC_init();
# endif
# endif
LOCK();
}
#if !defined(PCR) && !defined(SMALL_CONFIG)
-void GC_abort(const char *msg)
-{
-# if defined(MSWIN32) && !defined(DONT_USE_USER32_DLL)
- (void) MessageBoxA(NULL, msg, "Fatal error in gc", MB_ICONERROR|MB_OK);
-# else
- /* Avoid calling GC_err_printf() here, as GC_abort() could be */
- /* called from it. Note 1: this is not an atomic output. */
- /* Note 2: possible write errors are ignored. */
- if (WRITE(GC_stderr, (void *)msg, strlen(msg)) >= 0)
- (void)WRITE(GC_stderr, (void *)("\n"), 1);
+ /* Abort the program with a message. msg must not be NULL. */
+ void GC_abort(const char *msg)
+ {
+# if defined(MSWIN32)
+# ifndef DONT_USE_USER32_DLL
+ /* Use static binding to "user32.dll". */
+ (void)MessageBoxA(NULL, msg, "Fatal error in GC", MB_ICONERROR|MB_OK);
+# else
+ /* This simplifies linking - resolve "MessageBoxA" at run-time. */
+ HINSTANCE hU32 = LoadLibrary(TEXT("user32.dll"));
+ if (hU32) {
+ FARPROC pfn = GetProcAddress(hU32, "MessageBoxA");
+ if (pfn)
+ (void)(*(int (WINAPI *)(HWND, LPCSTR, LPCSTR, UINT))pfn)(
+ NULL /* hWnd */, msg, "Fatal error in GC",
+ MB_ICONERROR | MB_OK);
+ (void)FreeLibrary(hU32);
+ }
+# endif
+ /* Also duplicate msg to GC log file. */
# endif
+ /* Avoid calling GC_err_printf() here, as GC_abort() could be */
+ /* called from it. Note 1: this is not an atomic output. */
+ /* Note 2: possible write errors are ignored. */
+ if (WRITE(GC_stderr, (void *)msg, strlen(msg)) >= 0)
+ (void)WRITE(GC_stderr, (void *)("\n"), 1);
+
if (GETENV("GC_LOOP_ON_ABORT") != NULL) {
- /* In many cases it's easier to debug a running process. */
- /* It's arguably nicer to sleep, but that makes it harder */
- /* to look at the thread if the debugger doesn't know much */
- /* about threads. */
- for(;;) {}
+ /* In many cases it's easier to debug a running process. */
+ /* It's arguably nicer to sleep, but that makes it harder */
+ /* to look at the thread if the debugger doesn't know much */
+ /* about threads. */
+ for(;;) {}
}
-# if defined(MSWIN32) || defined(MSWINCE)
- DebugBreak();
+# if defined(MSWIN32) && defined(NO_DEBUGGING)
+ /* A more user-friendly abort after showing fatal message. */
+ if (msg) /* to suppress compiler warnings in ABORT callers. */
+ _exit(-1); /* exit on error without running "at-exit" callbacks */
+# elif defined(MSWIN32) || defined(MSWINCE)
+ DebugBreak();
# else
(void) abort();
# endif
-}
-#endif
+ }
+#endif /* !SMALL_CONFIG */
GC_API void GC_CALL GC_enable(void)
{
UNLOCK();
}
-/* Helper procedures for new kind creation. */
-void ** GC_new_free_list_inner(void)
+/* Helper procedures for new kind creation. */
+GC_API void ** GC_CALL GC_new_free_list_inner(void)
{
void *result = GC_INTERNAL_MALLOC((MAXOBJGRANULES+1)*sizeof(ptr_t),
- PTRFREE);
+ PTRFREE);
if (result == 0) ABORT("Failed to allocate freelist for new kind");
BZERO(result, (MAXOBJGRANULES+1)*sizeof(ptr_t));
return result;
}
-void ** GC_new_free_list(void)
+GC_API void ** GC_CALL GC_new_free_list(void)
{
void *result;
LOCK();
return result;
}
-unsigned GC_new_kind_inner(void **fl, GC_word descr, int adjust, int clear)
+GC_API unsigned GC_CALL GC_new_kind_inner(void **fl, GC_word descr,
+ int adjust, int clear)
{
unsigned result = GC_n_kinds++;
return result;
}
-unsigned GC_new_kind(void **fl, GC_word descr, int adjust, int clear)
+GC_API unsigned GC_CALL GC_new_kind(void **fl, GC_word descr, int adjust,
+ int clear)
{
unsigned result;
LOCK();
return result;
}
-unsigned GC_new_proc_inner(GC_mark_proc proc)
+GC_API unsigned GC_CALL GC_new_proc_inner(GC_mark_proc proc)
{
unsigned result = GC_n_mark_procs++;
return result;
}
-unsigned GC_new_proc(GC_mark_proc proc)
+GC_API unsigned GC_CALL GC_new_proc(GC_mark_proc proc)
{
unsigned result;
LOCK();
base.mem_base = (void *)&dummy;
# ifdef IA64
base.reg_base = (void *)GC_save_regs_in_stack();
- /* Unnecessarily flushes register stack, */
- /* but that probably doesn't hurt. */
+ /* Unnecessarily flushes register stack, */
+ /* but that probably doesn't hurt. */
# endif
return fn(&base, arg);
}
-#if !defined(NO_DEBUGGING)
+#ifdef THREADS
-GC_API void GC_CALL GC_dump(void)
+ /* Defined in pthread_support.c or win32_threads.c. */
+ GC_INNER void GC_do_blocking_inner(ptr_t data, void * context);
+
+#else
+
+GC_INNER ptr_t GC_blocked_sp = NULL;
+ /* NULL value means we are not inside GC_do_blocking() call. */
+# ifdef IA64
+ STATIC ptr_t GC_blocked_register_sp = NULL;
+# endif
+
+GC_INNER struct GC_activation_frame_s *GC_activation_frame = NULL;
+
+/* This is nearly the same as in win32_threads.c */
+GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type fn,
+ void * client_data)
+{
+ struct GC_activation_frame_s frame;
+ GC_ASSERT(GC_is_initialized);
+
+ /* Adjust our stack base value (this could happen if */
+ /* GC_get_main_stack_base() is unimplemented or broken for */
+ /* the platform). */
+ if (GC_stackbottom HOTTER_THAN (ptr_t)(&frame))
+ GC_stackbottom = (ptr_t)(&frame);
+
+ if (GC_blocked_sp == NULL) {
+ /* We are not inside GC_do_blocking() - do nothing more. */
+ return fn(client_data);
+ }
+
+ /* Setup new "frame". */
+ frame.saved_stack_ptr = GC_blocked_sp;
+# ifdef IA64
+ /* This is the same as in GC_call_with_stack_base(). */
+ frame.backing_store_end = GC_save_regs_in_stack();
+ /* Unnecessarily flushes register stack, */
+ /* but that probably doesn't hurt. */
+ frame.saved_backing_store_ptr = GC_blocked_register_sp;
+# endif
+ frame.prev = GC_activation_frame;
+ GC_blocked_sp = NULL;
+ GC_activation_frame = &frame;
+
+ client_data = fn(client_data);
+ GC_ASSERT(GC_blocked_sp == NULL);
+ GC_ASSERT(GC_activation_frame == &frame);
+
+ /* Restore original "frame". */
+ GC_activation_frame = frame.prev;
+# ifdef IA64
+ GC_blocked_register_sp = frame.saved_backing_store_ptr;
+# endif
+ GC_blocked_sp = frame.saved_stack_ptr;
+
+ return client_data; /* result */
+}
+
+/* This is nearly the same as in win32_threads.c */
+/*ARGSUSED*/
+STATIC void GC_do_blocking_inner(ptr_t data, void * context)
{
+ struct blocking_data * d = (struct blocking_data *) data;
+ GC_ASSERT(GC_is_initialized);
+ GC_ASSERT(GC_blocked_sp == NULL);
+# ifdef SPARC
+ GC_blocked_sp = GC_save_regs_in_stack();
+# else
+ GC_blocked_sp = (ptr_t) &d; /* save approx. sp */
+# endif
+# ifdef IA64
+ GC_blocked_register_sp = GC_save_regs_in_stack();
+# endif
+
+ d -> client_data = (d -> fn)(d -> client_data);
+
+# ifdef SPARC
+ GC_ASSERT(GC_blocked_sp != NULL);
+# else
+ GC_ASSERT(GC_blocked_sp == (ptr_t) &d);
+# endif
+ GC_blocked_sp = NULL;
+}
+
+#endif /* !THREADS */
+
+/* Wrapper for functions that are likely to block (or, at least, do not */
+/* allocate garbage collected memory and/or manipulate pointers to the */
+/* garbage collected heap) for an appreciable length of time. */
+/* In the single threaded case, GC_do_blocking() (together */
+/* with GC_call_with_gc_active()) might be used to make stack scanning */
+/* more precise (i.e. scan only stack frames of functions that allocate */
+/* garbage collected memory and/or manipulate pointers to the garbage */
+/* collected heap). */
+GC_API void * GC_CALL GC_do_blocking(GC_fn_type fn, void * client_data)
+{
+ struct blocking_data my_data;
+
+ my_data.fn = fn;
+ my_data.client_data = client_data;
+ GC_with_callee_saves_pushed(GC_do_blocking_inner, (ptr_t)(&my_data));
+ return my_data.client_data; /* result */
+}
+
+#if !defined(NO_DEBUGGING)
+ GC_API void GC_CALL GC_dump(void)
+ {
GC_printf("***Static roots:\n");
GC_print_static_roots();
GC_printf("\n***Heap sections:\n");
GC_print_hblkfreelist();
GC_printf("\n***Blocks in use:\n");
GC_print_block_list();
- GC_printf("\n***Finalization statistics:\n");
- GC_print_finalization_stats();
-}
+ }
+#endif /* !NO_DEBUGGING */
-#endif /* NO_DEBUGGING */
+/* Getter functions for the public Read-only variables. */
+/* GC_get_gc_no() is unsynchronized and should be typically called */
+/* inside the context of GC_call_with_alloc_lock() to prevent data */
+/* races (on multiprocessors). */
GC_API GC_word GC_CALL GC_get_gc_no(void)
{
return GC_gc_no;
GC_API int GC_CALL GC_get_parallel(void)
{
+ /* GC_parallel is initialized at start-up. */
return GC_parallel;
}
-/* Setter and getter functions for the public R/W variables. */
+/* Setter and getter functions for the public R/W function variables. */
+/* These functions are synchronized (like GC_set_warn_proc() and */
+/* GC_get_warn_proc()). */
GC_API void GC_CALL GC_set_oom_fn(GC_oom_func fn)
{
GC_ASSERT(fn != 0);
+ LOCK();
GC_oom_fn = fn;
+ UNLOCK();
}
GC_API GC_oom_func GC_CALL GC_get_oom_fn(void)
{
- return GC_oom_fn;
+ GC_oom_func fn;
+ LOCK();
+ fn = GC_oom_fn;
+ UNLOCK();
+ return fn;
}
GC_API void GC_CALL GC_set_finalizer_notifier(GC_finalizer_notifier_proc fn)
{
+ /* fn may be 0 (means no finalizer notifier). */
+ LOCK();
GC_finalizer_notifier = fn;
+ UNLOCK();
}
GC_API GC_finalizer_notifier_proc GC_CALL GC_get_finalizer_notifier(void)
{
- return GC_finalizer_notifier;
+ GC_finalizer_notifier_proc fn;
+ LOCK();
+ fn = GC_finalizer_notifier;
+ UNLOCK();
+ return fn;
}
+/* Setter and getter functions for the public numeric R/W variables. */
+/* It is safe to call these functions even before GC_INIT(). */
+/* These functions are unsynchronized and should be typically called */
+/* inside the context of GC_call_with_alloc_lock() (if called after */
+/* GC_INIT()) to prevent data races (unless it is guaranteed the */
+/* collector is not multi-threaded at that execution point). */
+
GC_API void GC_CALL GC_set_find_leak(int value)
{
/* value is of boolean type. */
{
return GC_time_limit;
}
+
+GC_API void GC_CALL GC_set_force_unmap_on_gcollect(int value)
+{
+ GC_force_unmap_on_gcollect = (GC_bool)value;
+}
+
+GC_API int GC_CALL GC_get_force_unmap_on_gcollect(void)
+{
+ return (int)GC_force_unmap_on_gcollect;
+}
projects / cacao.git / blobdiff