# ifdef GC_SOLARIS_THREADS
mutex_t GC_allocate_ml; /* Implicitly initialized. */
# else
-# ifdef GC_WIN32_THREADS
-# if !defined(GC_NOT_DLL) && (defined(_DLL) || defined(GC_DLL))
+# if defined(GC_WIN32_THREADS)
+# if defined(GC_PTHREADS)
+ pthread_mutex_t GC_allocate_ml = PTHREAD_MUTEX_INITIALIZER;
+# elif defined(GC_DLL)
__declspec(dllexport) CRITICAL_SECTION GC_allocate_ml;
# else
CRITICAL_SECTION GC_allocate_ml;
#undef STACKBASE
#endif
-/* Dont unnecessarily call GC_register_main_static_data() in case */
-/* dyn_load.c isn't linked in. */
+/* Dont unnecessarily call GC_register_main_static_data() in case */
+/* dyn_load.c isn't linked in. */
#ifdef DYNAMIC_LOADING
# define GC_REGISTER_MAIN_STATIC_DATA() GC_register_main_static_data()
#else
/* defined here so we don't have to load debug_malloc.o */
void (*GC_check_heap) GC_PROTO((void)) = (void (*) GC_PROTO((void)))0;
+void (*GC_print_all_smashed) GC_PROTO((void)) = (void (*) GC_PROTO((void)))0;
void (*GC_start_call_back) GC_PROTO((void)) = (void (*) GC_PROTO((void)))0;
GC_bool GC_print_back_height = 0;
+#ifndef NO_DEBUGGING
+ 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. */
+#endif
+
#ifdef FIND_LEAK
int GC_find_leak = 1;
#else
extern signed_word GC_mem_found;
+void * GC_project2(arg1, arg2)
+void *arg1;
+void *arg2;
+{
+ return arg2;
+}
+
# ifdef MERGE_SIZES
/* Set things up so that GC_size_map[i] >= words(i), */
/* but not too much bigger */
DISABLE_SIGNALS();
-#ifdef MSWIN32
- if (!GC_is_initialized) InitializeCriticalSection(&GC_allocate_ml);
+#if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS)
+ if (!GC_is_initialized) {
+ BOOL (WINAPI *pfn) (LPCRITICAL_SECTION, DWORD) = NULL;
+ HMODULE hK32 = GetModuleHandle("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();
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();
+ GC_init_dyld();
+ }
+# endif
}
#if defined(MSWIN32) || defined(MSWINCE)
extern void GC_setpagesize();
+
+#ifdef MSWIN32
+extern GC_bool GC_no_win32_dlls;
+#else
+# define GC_no_win32_dlls FALSE
+#endif
+
+void GC_exit_check GC_PROTO((void))
+{
+ GC_gcollect();
+}
+
+#ifdef SEARCH_FOR_DATA_START
+ extern void GC_init_linux_data_start GC_PROTO((void));
+#endif
+
#ifdef UNIX_LIKE
extern void GC_set_and_save_fault_handler GC_PROTO((void (*handler)(int)));
GC_err_printf1("Caught signal %d: looping in handler\n", sig);
for(;;);
}
-#endif
-#ifdef MSWIN32
-extern GC_bool GC_no_win32_dlls;
-#else
-# define GC_no_win32_dlls 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;
+ }
+}
+
+#else /* !UNIX_LIKE */
+
+# define maybe_install_looping_handler()
+
#endif
void GC_init_inner()
GC_print_stats = 1;
# endif
# if defined(MSWIN32) || defined(MSWINCE)
- InitializeCriticalSection(&GC_write_cs);
+ InitializeCriticalSection(&GC_write_cs);
# endif
-
if (0 != GETENV("GC_PRINT_STATS")) {
GC_print_stats = 1;
}
+# ifndef NO_DEBUGGING
+ if (0 != GETENV("GC_DUMP_REGULARLY")) {
+ GC_dump_regularly = 1;
+ }
+# endif
+# ifdef KEEP_BACK_PTRS
+ {
+ char * backtraces_string = GETENV("GC_BACKTRACES");
+ if (0 != backtraces_string) {
+ GC_backtraces = atol(backtraces_string);
+ if (backtraces_string[0] == '\0') GC_backtraces = 1;
+ }
+ }
+# endif
if (0 != GETENV("GC_FIND_LEAK")) {
GC_find_leak = 1;
+# ifdef __STDC__
+ atexit(GC_exit_check);
+# endif
}
if (0 != GETENV("GC_ALL_INTERIOR_POINTERS")) {
GC_all_interior_pointers = 1;
}
}
}
-# ifdef UNIX_LIKE
- if (0 != GETENV("GC_LOOP_ON_ABORT")) {
- GC_set_and_save_fault_handler(looping_handler);
- }
-# endif
+ maybe_install_looping_handler();
/* 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);
# if (defined(NETBSD) || defined(OPENBSD)) && defined(__ELF__)
GC_init_netbsd_elf();
# endif
-# if defined(GC_PTHREADS) || defined(GC_SOLARIS_THREADS)
+# if defined(GC_PTHREADS) || defined(GC_SOLARIS_THREADS) \
+ || defined(GC_WIN32_THREADS)
GC_thr_init();
# endif
# ifdef GC_SOLARIS_THREADS
|| defined(GC_SOLARIS_THREADS)
if (GC_stackbottom == 0) {
GC_stackbottom = GC_get_stack_base();
-# if defined(LINUX) && defined(IA64)
+# if (defined(LINUX) || defined(HPUX)) && defined(IA64)
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", 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_ASSERT(sizeof (ptr_t) == sizeof(word));
- GC_ASSERT(sizeof (signed_word) == sizeof(word));
- GC_ASSERT(sizeof (struct hblk) == HBLKSIZE);
+ GC_STATIC_ASSERT(sizeof (ptr_t) == sizeof(word));
+ GC_STATIC_ASSERT(sizeof (signed_word) == sizeof(word));
+ GC_STATIC_ASSERT(sizeof (struct hblk) == HBLKSIZE);
# ifndef THREADS
# if defined(STACK_GROWS_UP) && defined(STACK_GROWS_DOWN)
ABORT(
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);
+ }
+ }
if (!GC_expand_hp_inner(initial_heap_sz)) {
GC_err_printf0("Can't start up: not enough memory\n");
EXIT();
GC_incremental = TRUE;
}
# endif /* !SMALL_CONFIG */
- /* Get black list set up and/or incrmental GC started */
+ COND_DUMP;
+ /* Get black list set up and/or incremental GC started */
if (!GC_dont_precollect || GC_incremental) GC_gcollect_inner();
GC_is_initialized = TRUE;
# ifdef STUBBORN_ALLOC
if (GC_incremental) goto out;
GC_setpagesize();
if (GC_no_win32_dlls) goto out;
-# ifndef GC_SOLARIS_THREADS
- GC_dirty_init();
+# ifndef GC_SOLARIS_THREADS
+ maybe_install_looping_handler(); /* Before write fault handler! */
+ GC_dirty_init();
# endif
if (!GC_is_initialized) {
GC_init_inner();
{
GC_warn_proc result;
+# ifdef GC_WIN32_THREADS
+ GC_ASSERT(GC_is_initialized);
+# endif
LOCK();
result = GC_current_warn_proc;
GC_current_warn_proc = p;
return(result);
}
+# if defined(__STDC__) || defined(__cplusplus)
+ GC_word GC_set_free_space_divisor (GC_word value)
+# else
+ GC_word GC_set_free_space_divisor (value)
+ GC_word value;
+# endif
+{
+ GC_word old = GC_free_space_divisor;
+ GC_free_space_divisor = value;
+ return old;
+}
#ifndef PCR
void GC_abort(msg)
{
# if defined(MSWIN32)
(void) MessageBoxA(NULL, msg, "Fatal error in gc", MB_ICONERROR|MB_OK);
- DebugBreak();
# else
GC_err_printf1("%s\n", msg);
# endif
/* about threads. */
for(;;) {}
}
-# ifdef MSWIN32
+# if defined(MSWIN32) || defined(MSWINCE)
DebugBreak();
# else
(void) abort();
}
#endif
-#ifdef NEED_CALLINFO
+void GC_enable()
+{
+ LOCK();
+ GC_dont_gc--;
+ UNLOCK();
+}
-#ifdef HAVE_BUILTIN_BACKTRACE
-# include <execinfo.h>
-# ifdef LINUX
-# include <unistd.h>
-# endif
-#endif
+void GC_disable()
+{
+ LOCK();
+ GC_dont_gc++;
+ UNLOCK();
+}
-void GC_print_callers (info)
-struct callinfo info[NFRAMES];
+/* Helper procedures for new kind creation. */
+void ** GC_new_free_list_inner()
{
- register int i;
-
-# if NFRAMES == 1
- GC_err_printf0("\tCaller at allocation:\n");
-# else
- GC_err_printf0("\tCall chain at allocation:\n");
-# endif
- for (i = 0; i < NFRAMES; i++) {
- if (info[i].ci_pc == 0) break;
-# if NARGS > 0
- {
- int j;
-
- GC_err_printf0("\t\targs: ");
- for (j = 0; j < NARGS; j++) {
- if (j != 0) GC_err_printf0(", ");
- GC_err_printf2("%d (0x%X)", ~(info[i].ci_arg[j]),
- ~(info[i].ci_arg[j]));
- }
- GC_err_printf0("\n");
- }
-# endif
-# if defined(HAVE_BUILTIN_BACKTRACE) && !defined(REDIRECT_MALLOC)
- /* Unfortunately backtrace_symbols calls malloc, which makes */
- /* it dangersous if that has been redirected. */
- {
- char **sym_name =
- backtrace_symbols((void **)(&(info[i].ci_pc)), 1);
- char *name = sym_name[0];
- GC_bool found_it = (strchr(name, '(') != 0);
- FILE *pipe;
-# ifdef LINUX
- if (!found_it) {
-# define EXE_SZ 100
- static char exe_name[EXE_SZ];
-# define CMD_SZ 200
- char cmd_buf[CMD_SZ];
-# define RESULT_SZ 200
- static char result_buf[RESULT_SZ];
- size_t result_len;
- static GC_bool found_exe_name = FALSE;
- static GC_bool will_fail = FALSE;
- int ret_code;
- /* Unfortunately, this is the common case for the */
- /* main executable. */
- /* Try to get it via a hairy and expensive scheme. */
- /* First we get the name of the executable: */
- if (will_fail) goto out;
- if (!found_exe_name) {
- ret_code = readlink("/proc/self/exe", exe_name, EXE_SZ);
- if (ret_code < 0 || ret_code >= EXE_SZ || exe_name[0] != '/') {
- will_fail = TRUE; /* Dont try again. */
- goto out;
- }
- exe_name[ret_code] = '\0';
- found_exe_name = TRUE;
- }
- /* Then we use popen to start addr2line -e <exe> <addr> */
- /* There are faster ways to do this, but hopefully this */
- /* isn't time critical. */
- sprintf(cmd_buf, "/usr/bin/addr2line -e %s 0x%lx", exe_name,
- (unsigned long)info[i].ci_pc);
- pipe = popen(cmd_buf, "r");
- if (pipe < 0 || fgets(result_buf, RESULT_SZ, pipe) == 0) {
- will_fail = TRUE;
- goto out;
- }
- result_len = strlen(result_buf);
- if (result_buf[result_len - 1] == '\n') --result_len;
- if (result_buf[0] == '?'
- || result_buf[result_len-2] == ':'
- && result_buf[result_len-1] == '0')
- goto out;
- if (result_len < RESULT_SZ - 25) {
- /* Add in hex address */
- sprintf(result_buf + result_len, " [0x%lx]",
- (unsigned long)info[i].ci_pc);
- }
- name = result_buf;
- pclose(pipe);
- out:
- }
-# endif
- GC_err_printf1("\t\t%s\n", name);
- free(sym_name);
- }
-# else
- GC_err_printf1("\t\t##PC##= 0x%lx\n", info[i].ci_pc);
-# endif
- }
+ void *result = GC_INTERNAL_MALLOC((MAXOBJSZ+1)*sizeof(ptr_t), PTRFREE);
+ if (result == 0) ABORT("Failed to allocate freelist for new kind");
+ BZERO(result, (MAXOBJSZ+1)*sizeof(ptr_t));
+ return result;
+}
+
+void ** GC_new_free_list()
+{
+ void *result;
+ LOCK(); DISABLE_SIGNALS();
+ result = GC_new_free_list_inner();
+ UNLOCK(); ENABLE_SIGNALS();
+ return result;
}
-#endif /* SAVE_CALL_CHAIN */
+int GC_new_kind_inner(fl, descr, adjust, clear)
+void **fl;
+GC_word descr;
+int adjust;
+int clear;
+{
+ int result = GC_n_kinds++;
+
+ if (GC_n_kinds > MAXOBJKINDS) ABORT("Too many kinds");
+ GC_obj_kinds[result].ok_freelist = (ptr_t *)fl;
+ GC_obj_kinds[result].ok_reclaim_list = 0;
+ GC_obj_kinds[result].ok_descriptor = descr;
+ GC_obj_kinds[result].ok_relocate_descr = adjust;
+ GC_obj_kinds[result].ok_init = clear;
+ return result;
+}
-/* Needed by SRC_M3, gcj, and should perhaps be the official interface */
-/* to GC_dont_gc. */
-void GC_enable()
+int GC_new_kind(fl, descr, adjust, clear)
+void **fl;
+GC_word descr;
+int adjust;
+int clear;
{
- GC_dont_gc--;
+ int result;
+ LOCK(); DISABLE_SIGNALS();
+ result = GC_new_kind_inner(fl, descr, adjust, clear);
+ UNLOCK(); ENABLE_SIGNALS();
+ return result;
}
-void GC_disable()
+int GC_new_proc_inner(proc)
+GC_mark_proc proc;
{
- GC_dont_gc++;
+ int result = GC_n_mark_procs++;
+
+ if (GC_n_mark_procs > MAX_MARK_PROCS) ABORT("Too many mark procedures");
+ GC_mark_procs[result] = proc;
+ return result;
+}
+
+int GC_new_proc(proc)
+GC_mark_proc proc;
+{
+ int result;
+ LOCK(); DISABLE_SIGNALS();
+ result = GC_new_proc_inner(proc);
+ UNLOCK(); ENABLE_SIGNALS();
+ return result;
}
+
#if !defined(NO_DEBUGGING)
void GC_dump()
GC_print_hblkfreelist();
GC_printf0("\n***Blocks in use:\n");
GC_print_block_list();
+ GC_printf0("\n***Finalization statistics:\n");
+ GC_print_finalization_stats();
}
#endif /* NO_DEBUGGING */
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