X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fmm%2Fboehm-gc%2Fmisc.c;h=549788614d600379b278515b1b308b45fa9e54d0;hb=c9ee016a64e925938f84fcb85521f82febcc4f63;hp=a556f9573cc9edc8fa7082052a9849eff31dd2c4;hpb=70bd214ee92d267a4bcfb4dbe2dc6e8e0d2c6a51;p=cacao.git diff --git a/src/mm/boehm-gc/misc.c b/src/mm/boehm-gc/misc.c old mode 100755 new mode 100644 index a556f9573..549788614 --- a/src/mm/boehm-gc/misc.c +++ b/src/mm/boehm-gc/misc.c @@ -1,4 +1,4 @@ -/* +/* * 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. @@ -12,36 +12,32 @@ * 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 "config.h" +#include "private/gc_pmark.h" #include #include #include -#ifndef _WIN32_WCE -#include -#endif -#define I_HIDE_POINTERS /* To make GC_call_with_alloc_lock visible */ -#include "private/gc_pmark.h" +#ifndef MSWINCE +# include +#endif #ifdef GC_SOLARIS_THREADS # include #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 -# include #endif -#ifdef UNIX_LIKE +#if defined(UNIX_LIKE) || defined(CYGWIN32) # include # include # include - - int GC_log; /* Forward decl, so we can set it. */ #endif #ifdef NONSTOP @@ -50,33 +46,33 @@ #if defined(THREADS) && defined(PCR) # include "il/PCR_IL.h" - 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. */ - -#if defined(NOSYS) || defined(ECOS) -#undef STACKBASE + 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. */ -/* 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; @@ -88,21 +84,22 @@ GC_bool GC_dont_gc = 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 @@ -117,62 +114,69 @@ GC_bool GC_print_back_height = 0; 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*/ -void * GC_default_oom_fn(size_t bytes_requested) +STATIC void * GC_CALLBACK GC_default_oom_fn(size_t bytes_requested) { return(0); } -void * (*GC_oom_fn) (size_t bytes_requested) = GC_default_oom_fn; - -void * GC_project2(void *arg1, void *arg2) -{ - return arg2; -} +/* 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 alogrithm (but we precompute it). */ -void GC_init_size_map(void) +/* 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); - GC_ASSERT(GC_size_map[i] < TINY_FREELISTS); +# ifndef _MSC_VER + GC_ASSERT(GC_size_map[i] < TINY_FREELISTS); + /* 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++; @@ -183,27 +187,27 @@ void GC_extend_size_map(size_t i) 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; } @@ -215,84 +219,86 @@ void GC_extend_size_map(size_t i) * that are not written. We partially address this by clearing * sections of the stack whenever we get control. */ -word GC_stack_last_cleared = 0; /* GC_no when we last did this */ # 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 = 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 */ -# define DEGRADE_RATE 50 - -ptr_t GC_min_sp; /* Coolest stack pointer value from which we've */ - /* already cleared the stack. */ - -ptr_t GC_high_water; - /* "hottest" stack pointer value we have seen */ - /* recently. Degrades over time. */ -word GC_bytes_allocd_at_reset; +# 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) { @@ -312,229 +318,284 @@ void * GC_clear_stack(void *arg) 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. */ -void * GC_base(void * p) +/* 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; struct hblk *h; 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 obects this also happens to work from interior pointers, */ -/* but that shouldn't be relied upon.) */ -size_t 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 GC_get_heap_size(void) +GC_API size_t GC_CALL GC_get_heap_size(void) { - return GC_heapsize; + 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) */ + value = (size_t)(GC_heapsize - GC_unmapped_bytes); + UNLOCK(); + return value; } -size_t GC_get_free_bytes(void) +GC_API size_t GC_CALL GC_get_free_bytes(void) { - return GC_large_free_bytes; + size_t value; + DCL_LOCK_STATE; + LOCK(); + /* ignore the memory space returned to OS */ + value = (size_t)(GC_large_free_bytes - GC_unmapped_bytes); + UNLOCK(); + return value; } -size_t GC_get_bytes_since_gc(void) +/* 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 GC_bytes_allocd; + return (size_t)(GC_heapsize - GC_unmapped_bytes); } -size_t GC_get_total_bytes(void) +GC_API size_t GC_CALL GC_get_free_bytes_inner(void) { - return GC_bytes_allocd+GC_bytes_allocd_before_gc; + return (size_t)(GC_large_free_bytes - GC_unmapped_bytes); } -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 */ - -void GC_init(void) +GC_API size_t GC_CALL GC_get_unmapped_bytes(void) { +# ifdef USE_MUNMAP + size_t value; DCL_LOCK_STATE; - -#if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) - if (!GC_is_initialized) { - BOOL (WINAPI *pfn) (LPCRITICAL_SECTION, DWORD) = NULL; - HMODULE hK32 = GetModuleHandleA("kernel32.dll"); - if (hK32) - pfn = (BOOL (WINAPI *) (LPCRITICAL_SECTION, DWORD)) - GetProcAddress (hK32, - "InitializeCriticalSectionAndSpinCount"); - if (pfn) - pfn(&GC_allocate_ml, 4000); - else - InitializeCriticalSection (&GC_allocate_ml); - } -#endif /* MSWIN32 */ + LOCK(); + value = (size_t)GC_unmapped_bytes; + UNLOCK(); + return value; +# else + return 0; +# endif +} +GC_API size_t GC_CALL GC_get_bytes_since_gc(void) +{ + size_t value; + DCL_LOCK_STATE; LOCK(); - GC_init_inner(); + value = GC_bytes_allocd; UNLOCK(); + return value; +} -# if defined(PARALLEL_MARK) || defined(THREAD_LOCAL_ALLOC) - /* Make sure marker threads and 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 */ +GC_API size_t GC_CALL GC_get_total_bytes(void) +{ + size_t value; + DCL_LOCK_STATE; + LOCK(); + value = GC_bytes_allocd+GC_bytes_allocd_before_gc; + UNLOCK(); + return value; +} -# 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(); - GC_init_dyld(); - } +#ifdef THREADS + GC_API int GC_CALL GC_get_suspend_signal(void) + { +# ifdef SIG_SUSPEND + return SIG_SUSPEND; +# else + return -1; # endif -} + } +#endif /* THREADS */ -#if defined(MSWIN32) || defined(MSWINCE) - CRITICAL_SECTION GC_write_cs; -#endif +GC_INNER GC_bool GC_is_initialized = FALSE; -#ifdef MSWIN32 - extern void GC_init_win32(void); +#if (defined(MSWIN32) || defined(MSWINCE)) && defined(THREADS) + GC_INNER CRITICAL_SECTION GC_write_cs; #endif -extern void GC_setpagesize(); - - #ifdef MSWIN32 -extern GC_bool GC_no_win32_dlls; -#else -# define GC_no_win32_dlls FALSE + GC_INNER void GC_init_win32(void); #endif -void GC_exit_check(void) +GC_INNER void GC_setpagesize(void); + +STATIC void GC_exit_check(void) { GC_gcollect(); } #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(sig) -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() -{ - /* 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(NETBSD) && defined(__ELF__) + GC_INNER void GC_init_netbsd_elf(void); +#endif + +#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32) && !defined(MSWINCE) + STATIC int GC_log = 2; #endif -void GC_init_inner() +GC_API void GC_CALL GC_init(void) { + /* LOCK(); -- no longer does anything this early. */ # if !defined(THREADS) && defined(GC_ASSERTIONS) word dummy; # endif - word initial_heap_sz = (word)MINHINCR; - + +# ifdef GC_INITIAL_HEAP_SIZE + word initial_heap_sz = divHBLKSZ(GC_INITIAL_HEAP_SIZE); +# else + word initial_heap_sz = (word)MINHINCR; +# endif + IF_CANCEL(int cancel_state;) + if (GC_is_initialized) return; -# if defined(MSWIN32) || defined(MSWINCE) + + DISABLE_CANCEL(cancel_state); + /* Note that although we are nominally called with the */ + /* 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. */ +# ifdef THREADS + GC_ASSERT(!GC_need_to_lock); +# endif +# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + { +# ifndef MSWINCE + BOOL (WINAPI *pfn) (LPCRITICAL_SECTION, DWORD) = NULL; + HMODULE hK32 = GetModuleHandle(TEXT("kernel32.dll")); + if (hK32) + pfn = (BOOL (WINAPI *) (LPCRITICAL_SECTION, DWORD)) + GetProcAddress (hK32, + "InitializeCriticalSectionAndSpinCount"); + if (pfn) + pfn(&GC_allocate_ml, 4000); + else +# 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; - } -# if defined(UNIX_LIKE) +# 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; @@ -545,7 +606,7 @@ void GC_init_inner() 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 @@ -569,90 +630,131 @@ void GC_init_inner() 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 -# ifdef STRTOULL - long long addr = strtoull(addr_string, NULL, 16); -# else - long addr = strtoul(addr_string, NULL, 16); -# endif - if (addr < 0x1000) - WARN("Unlikely trace address: 0x%lx\n", (GC_word)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 } } - { - 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; +# 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; + } } } - } +# 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; + } + } +# endif { char * interval_string = GETENV("GC_LARGE_ALLOC_WARN_INTERVAL"); 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; + } + } +# 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 - /* Ignore gcc -Wall warnings on the following. */ GC_STATIC_ASSERT(sizeof (ptr_t) == sizeof(word)); GC_STATIC_ASSERT(sizeof (signed_word) == sizeof(word)); GC_STATIC_ASSERT(sizeof (struct hblk) == HBLKSIZE); @@ -664,52 +766,52 @@ void GC_init_inner() # endif # endif # if !defined(_AUX_SOURCE) || defined(__GNUC__) - GC_ASSERT((word)(-1) > (word)0); + GC_STATIC_ASSERT((word)(-1) > (word)0); /* word should be unsigned */ # endif - GC_ASSERT((ptr_t)(word)(-1) > (ptr_t)0); - /* Ptr_t comparisons should behave as unsigned comparisons. */ - GC_ASSERT((signed_word)(-1) < (signed_word)0); -# if !defined(SMALL_CONFIG) +# 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. */ +# endif + GC_STATIC_ASSERT((signed_word)(-1) < (signed_word)0); +# 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 = atoi(sz_str); - 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)atol(sz_str); - 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"); @@ -719,7 +821,7 @@ void GC_init_inner() 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 @@ -742,163 +844,213 @@ void GC_init_inner() /* 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(); -# endif -# if defined(GC_LINUX_THREADS) && defined(REDIRECT_MALLOC) - { - extern void GC_init_lib_bounds(void); - GC_init_lib_bounds(); - } + 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. */ +# 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(); +# 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. */ + GC_init_dyld(); +# endif + RESTORE_CANCEL(cancel_state); } -void GC_enable_incremental(void) +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) { +# 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 -# endif -# ifdef OLD_WIN32_LOG_FILE -# define LOG_FILE _T("gc.log") + +# if defined(_MSC_VER) && defined(_DEBUG) && !defined(MSWINCE) +# include # endif - HANDLE GC_stdout = 0; + STATIC HANDLE GC_stdout = 0; - void GC_deinit() + void GC_deinit(void) { +# ifdef THREADS if (GC_is_initialized) { - DeleteCriticalSection(&GC_write_cs); + DeleteCriticalSection(&GC_write_cs); } +# endif } -# ifndef THREADS -# define GC_need_to_lock 0 /* Not defined without threads */ +#ifdef THREADS +# ifdef PARALLEL_MARK +# define IF_NEED_TO_LOCK(x) if (GC_parallel || GC_need_to_lock) x +# else +# define IF_NEED_TO_LOCK(x) if (GC_need_to_lock) x # endif - int GC_write(const char *buf, size_t len) +#else +# define IF_NEED_TO_LOCK(x) +#endif + +#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; - if (GC_need_to_lock) EnterCriticalSection(&GC_write_cs); + 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 (GC_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 - GetModuleFileName(NULL, logPath, _MAX_PATH); - strcat(logPath, ".log"); -# endif - file_name = logPath; - } - GC_stdout = CreateFile(logPath, 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 (GC_need_to_lock) LeaveCriticalSection(&GC_write_cs); + IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs)); return tmp ? (int)written : -1; } -# undef GC_need_to_lock -#endif +#endif /* MSWIN32 */ #if defined(OS2) || defined(MACOS) -FILE * GC_stdout = NULL; -FILE * GC_stderr = NULL; -FILE * GC_log = NULL; -int GC_tmp; /* Should really be local ... */ + STATIC FILE * GC_stdout = NULL; + STATIC FILE * GC_stderr = NULL; + STATIC FILE * GC_log = NULL; - void GC_set_files() + 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) - int GC_stdout = 1; - int GC_stderr = 2; - int GC_log = 2; + STATIC int GC_stdout = 1; + STATIC int GC_stderr = 2; # if !defined(AMIGA) # include # endif @@ -906,42 +1058,46 @@ int GC_tmp; /* Should really be local ... */ #if !defined(MSWIN32) && !defined(MSWINCE) && !defined(OS2) \ && !defined(MACOS) && !defined(ECOS) && !defined(NOSYS) -int GC_write(fd, buf, len) -int fd; -const char *buf; -size_t len; -{ - register int bytes_written = 0; - register int result; - +STATIC int GC_write(int fd, const char *buf, size_t len) +{ + 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(fd, buf, 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(fd, buf, len) -{ - /* No writing. */ - return len; -} + STATIC int GC_write(int fd, const char *buf, size_t len) + { + /* No writing. */ + return len; + } #endif @@ -950,9 +1106,10 @@ int GC_write(fd, buf, len) # 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 @@ -960,51 +1117,59 @@ int GC_write(fd, buf, len) #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 ans 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) @@ -1013,90 +1178,125 @@ void GC_err_puts(const char *s) } #if defined(LINUX) && !defined(SMALL_CONFIG) -void GC_err_write(buf, len) -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 -void GC_default_warn_proc(char *msg, GC_word arg) +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; -GC_warn_proc GC_set_warn_proc(GC_warn_proc p) +/* This is recommended for production code (release). */ +GC_API void GC_CALLBACK GC_ignore_warn_proc(char *msg, GC_word arg) { - GC_warn_proc result; + if (GC_print_stats) { + /* Don't ignore warnings if stats printing is on. */ + GC_default_warn_proc(msg, arg); + } +} +GC_API void GC_CALL GC_set_warn_proc(GC_warn_proc p) +{ + GC_ASSERT(p != 0); # ifdef GC_WIN32_THREADS - GC_ASSERT(GC_is_initialized); +# ifdef CYGWIN32 + /* Need explicit GC_INIT call */ + GC_ASSERT(GC_is_initialized); +# else + if (!GC_is_initialized) GC_init(); +# endif # endif LOCK(); - result = GC_current_warn_proc; GC_current_warn_proc = p; UNLOCK(); - return(result); } -GC_word GC_set_free_space_divisor (GC_word value) +GC_API GC_warn_proc GC_CALL GC_get_warn_proc(void) { - GC_word old = GC_free_space_divisor; - GC_free_space_divisor = value; - return old; + GC_warn_proc result; + LOCK(); + result = GC_current_warn_proc; + UNLOCK(); + return(result); } -#ifndef PCR -void GC_abort(const char *msg) -{ +#if !defined(PCR) && !defined(SMALL_CONFIG) + /* Abort the program with a message. msg must not be NULL. */ + void GC_abort(const char *msg) + { # if defined(MSWIN32) - (void) MessageBoxA(NULL, msg, "Fatal error in gc", MB_ICONERROR|MB_OK); -# else - GC_err_printf("%s\n", msg); +# 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 */ -void GC_enable() +GC_API void GC_CALL GC_enable(void) { LOCK(); GC_dont_gc--; UNLOCK(); } -void GC_disable() +GC_API void GC_CALL GC_disable(void) { LOCK(); GC_dont_gc++; UNLOCK(); } -/* Helper procedures for new kind creation. */ -void ** GC_new_free_list_inner() +/* 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() +GC_API void ** GC_CALL GC_new_free_list(void) { void *result; LOCK(); @@ -1105,7 +1305,8 @@ void ** GC_new_free_list() 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++; @@ -1118,7 +1319,8 @@ unsigned GC_new_kind_inner(void **fl, GC_word descr, int adjust, int clear) 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(); @@ -1127,7 +1329,7 @@ unsigned GC_new_kind(void **fl, GC_word descr, int adjust, int clear) 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++; @@ -1136,7 +1338,7 @@ unsigned GC_new_proc_inner(GC_mark_proc proc) 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(); @@ -1145,7 +1347,7 @@ unsigned GC_new_proc(GC_mark_proc proc) return result; } -void * GC_call_with_stack_base(GC_stack_base_func fn, void *arg) +GC_API void * GC_CALL GC_call_with_stack_base(GC_stack_base_func fn, void *arg) { int dummy; struct GC_stack_base base; @@ -1153,16 +1355,121 @@ void * GC_call_with_stack_base(GC_stack_base_func fn, void *arg) 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 + + /* Defined in pthread_support.c or win32_threads.c. */ + GC_INNER void GC_do_blocking_inner(ptr_t data, void * context); -void GC_dump() +#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"); @@ -1171,8 +1478,213 @@ void GC_dump() 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 */ + +/* 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 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(); } -#endif /* NO_DEBUGGING */ +GC_API GC_oom_func GC_CALL GC_get_oom_fn(void) +{ + 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) +{ + 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. */ + GC_find_leak = value; +} + +GC_API int GC_CALL GC_get_find_leak(void) +{ + return GC_find_leak; +} + +GC_API void GC_CALL GC_set_all_interior_pointers(int value) +{ + GC_ASSERT(!GC_is_initialized || value == GC_all_interior_pointers); + GC_ASSERT(value == 0 || value == 1); + GC_all_interior_pointers = value; +} + +GC_API int GC_CALL GC_get_all_interior_pointers(void) +{ + return GC_all_interior_pointers; +} + +GC_API void GC_CALL GC_set_finalize_on_demand(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_finalize_on_demand = value; +} + +GC_API int GC_CALL GC_get_finalize_on_demand(void) +{ + return GC_finalize_on_demand; +} + +GC_API void GC_CALL GC_set_java_finalization(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_java_finalization = value; +} + +GC_API int GC_CALL GC_get_java_finalization(void) +{ + return GC_java_finalization; +} + +GC_API void GC_CALL GC_set_dont_expand(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_dont_expand = value; +} + +GC_API int GC_CALL GC_get_dont_expand(void) +{ + return GC_dont_expand; +} + +GC_API void GC_CALL GC_set_no_dls(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_no_dls = value; +} + +GC_API int GC_CALL GC_get_no_dls(void) +{ + return GC_no_dls; +} + +GC_API void GC_CALL GC_set_non_gc_bytes(GC_word value) +{ + GC_non_gc_bytes = value; +} + +GC_API GC_word GC_CALL GC_get_non_gc_bytes(void) +{ + return GC_non_gc_bytes; +} + +GC_API void GC_CALL GC_set_free_space_divisor(GC_word value) +{ + GC_ASSERT(value > 0); + GC_free_space_divisor = value; +} + +GC_API GC_word GC_CALL GC_get_free_space_divisor(void) +{ + return GC_free_space_divisor; +} + +GC_API void GC_CALL GC_set_max_retries(GC_word value) +{ + GC_ASSERT(value != ~(GC_word)0); + GC_max_retries = value; +} + +GC_API GC_word GC_CALL GC_get_max_retries(void) +{ + return GC_max_retries; +} + +GC_API void GC_CALL GC_set_dont_precollect(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_dont_precollect = value; +} + +GC_API int GC_CALL GC_get_dont_precollect(void) +{ + return GC_dont_precollect; +} + +GC_API void GC_CALL GC_set_full_freq(int value) +{ + GC_ASSERT(value >= 0); + GC_full_freq = value; +} + +GC_API int GC_CALL GC_get_full_freq(void) +{ + return GC_full_freq; +} + +GC_API void GC_CALL GC_set_time_limit(unsigned long value) +{ + GC_ASSERT(value != (unsigned long)-1L); + GC_time_limit = value; +} + +GC_API unsigned long GC_CALL GC_get_time_limit(void) +{ + 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; +}