=================================================================== RCS file: /home/cvs/OpenXM_contrib2/asir2000/gc/misc.c,v retrieving revision 1.3 retrieving revision 1.4 diff -u -p -r1.3 -r1.4 --- OpenXM_contrib2/asir2000/gc/misc.c 2000/12/01 09:26:12 1.3 +++ OpenXM_contrib2/asir2000/gc/misc.c 2001/04/20 07:39:19 1.4 @@ -15,16 +15,21 @@ #include +#ifndef _WIN32_WCE #include +#endif #define I_HIDE_POINTERS /* To make GC_call_with_alloc_lock visible */ -#include "gc_priv.h" +#include "private/gc_pmark.h" #ifdef SOLARIS_THREADS # include #endif -#ifdef MSWIN32 +#if defined(MSWIN32) || defined(MSWINCE) +# define WIN32_LEAN_AND_MEAN +# define NOSERVICE # include +# include #endif # ifdef THREADS @@ -40,15 +45,22 @@ mutex_t GC_allocate_ml; /* Implicitly initialized. */ # else # ifdef WIN32_THREADS - GC_API CRITICAL_SECTION GC_allocate_ml; +# if defined(_DLL) || defined(GC_DLL) + __declspec(dllexport) CRITICAL_SECTION GC_allocate_ml; +# else + CRITICAL_SECTION GC_allocate_ml; +# endif # else -# if defined(IRIX_THREADS) || defined(IRIX_JDK_THREADS) \ +# if defined(IRIX_THREADS) \ || (defined(LINUX_THREADS) && defined(USE_SPIN_LOCK)) pthread_t GC_lock_holder = NO_THREAD; # else # if defined(HPUX_THREADS) \ || defined(LINUX_THREADS) && !defined(USE_SPIN_LOCK) pthread_mutex_t GC_allocate_ml = PTHREAD_MUTEX_INITIALIZER; + pthread_t GC_lock_holder = NO_THREAD; + /* Used only for assertions, and to prevent */ + /* recursive reentry in the system call wrapper. */ # else --> declare allocator lock here # endif @@ -65,22 +77,36 @@ GC_FAR struct _GC_arrays GC_arrays /* = { 0 } */; GC_bool GC_debugging_started = FALSE; /* defined here so we don't have to load debug_malloc.o */ -void (*GC_check_heap)() = (void (*)())0; +void (*GC_check_heap) GC_PROTO((void)) = (void (*) GC_PROTO((void)))0; -void (*GC_start_call_back)() = (void (*)())0; +void (*GC_start_call_back) GC_PROTO((void)) = (void (*) GC_PROTO((void)))0; ptr_t GC_stackbottom = 0; +#ifdef IA64 + ptr_t GC_register_stackbottom = 0; +#endif + GC_bool GC_dont_gc = 0; +GC_bool GC_dont_precollect = 0; + GC_bool GC_quiet = 0; +GC_bool GC_print_stats = 0; + #ifdef FIND_LEAK int GC_find_leak = 1; #else int GC_find_leak = 0; #endif +#ifdef ALL_INTERIOR_POINTERS + int GC_all_interior_pointers = 1; +#else + int GC_all_interior_pointers = 0; +#endif + /*ARGSUSED*/ GC_PTR GC_default_oom_fn GC_PROTO((size_t bytes_requested)) { @@ -103,19 +129,20 @@ extern signed_word GC_mem_found; { register unsigned i; - /* Map size 0 to 1. This avoids problems at lower levels. */ - GC_size_map[0] = 1; - /* One word objects don't have to be 2 word aligned. */ - for (i = 1; i < sizeof(word); i++) { - GC_size_map[i] = 1; + /* Map size 0 to something bigger. */ + /* This avoids problems at lower levels. */ + /* One word objects don't have to be 2 word aligned, */ + /* unless we're using mark bytes. */ + for (i = 0; i < sizeof(word); i++) { + GC_size_map[i] = MIN_WORDS; } - GC_size_map[sizeof(word)] = ROUNDED_UP_WORDS(sizeof(word)); +# if MIN_WORDS > 1 + GC_size_map[sizeof(word)] = MIN_WORDS; +# else + GC_size_map[sizeof(word)] = ROUNDED_UP_WORDS(sizeof(word)); +# endif for (i = sizeof(word) + 1; i <= 8 * sizeof(word); i++) { -# ifdef ALIGN_DOUBLE - GC_size_map[i] = (ROUNDED_UP_WORDS(i) + 1) & (~1); -# else - GC_size_map[i] = ROUNDED_UP_WORDS(i); -# endif + GC_size_map[i] = ALIGNED_WORDS(i); } for (i = 8*sizeof(word) + 1; i <= 16 * sizeof(word); i++) { GC_size_map[i] = (ROUNDED_UP_WORDS(i) + 1) & (~1); @@ -178,10 +205,10 @@ extern signed_word GC_mem_found; # endif } byte_sz = WORDS_TO_BYTES(word_sz); -# ifdef ADD_BYTE_AT_END + if (GC_all_interior_pointers) { /* We need one extra byte; don't fill in GC_size_map[byte_sz] */ byte_sz--; -# endif + } for (j = low_limit; j <= byte_sz; j++) GC_size_map[j] = word_sz; } @@ -198,39 +225,24 @@ extern signed_word GC_mem_found; */ word GC_stack_last_cleared = 0; /* GC_no when we last did this */ # ifdef THREADS -# define CLEAR_SIZE 2048 -# else -# define CLEAR_SIZE 213 +# define BIG_CLEAR_SIZE 2048 /* Clear this much now and then. */ +# define SMALL_CLEAR_SIZE 256 /* Clear this much every time. */ # endif +# define CLEAR_SIZE 213 /* Granularity for GC_clear_stack_inner */ # define DEGRADE_RATE 50 word GC_min_sp; /* Coolest stack pointer value from which we've */ /* already cleared the stack. */ -# ifdef STACK_GROWS_DOWN -# define COOLER_THAN > -# define HOTTER_THAN < -# define MAKE_COOLER(x,y) if ((word)(x)+(y) > (word)(x)) {(x) += (y);} \ - else {(x) = (word)ONES;} -# define MAKE_HOTTER(x,y) (x) -= (y) -# else -# define COOLER_THAN < -# define HOTTER_THAN > -# define MAKE_COOLER(x,y) if ((word)(x)-(y) < (word)(x)) {(x) -= (y);} else {(x) = 0;} -# define MAKE_HOTTER(x,y) (x) += (y) -# endif - word GC_high_water; /* "hottest" stack pointer value we have seen */ /* recently. Degrades over time. */ word GC_words_allocd_at_reset; -#if defined(ASM_CLEAR_CODE) && !defined(THREADS) +#if defined(ASM_CLEAR_CODE) extern ptr_t GC_clear_stack_inner(); -#endif - -#if !defined(ASM_CLEAR_CODE) && !defined(THREADS) +#else /* Clear the stack up to about limit. Return arg. */ /*ARGSUSED*/ ptr_t GC_clear_stack_inner(arg, limit) @@ -258,10 +270,13 @@ ptr_t arg; { register word sp = (word)GC_approx_sp(); /* Hotter than actual sp */ # ifdef THREADS - word dummy[CLEAR_SIZE]; -# else - register word limit; + word dummy[SMALL_CLEAR_SIZE]; + static unsigned random_no = 0; + /* Should be more random than it is ... */ + /* Used to occasionally clear a bigger */ + /* chunk. */ # endif + register word limit; # define SLOP 400 /* Extra bytes we clear every time. This clears our own */ @@ -279,7 +294,14 @@ ptr_t arg; /* thus more junk remains accessible, thus the heap gets */ /* larger ... */ # ifdef THREADS - BZERO(dummy, CLEAR_SIZE*sizeof(word)); + if (++random_no % 13 == 0) { + limit = sp; + MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word)); + return GC_clear_stack_inner(arg, limit); + } else { + BZERO(dummy, SMALL_CLEAR_SIZE*sizeof(word)); + return arg; + } # else if (GC_gc_no > GC_stack_last_cleared) { /* Start things over, so we clear the entire stack again */ @@ -309,8 +331,8 @@ ptr_t arg; if (GC_min_sp HOTTER_THAN GC_high_water) GC_min_sp = GC_high_water; GC_words_allocd_at_reset = GC_words_allocd; } + return(arg); # endif - return(arg); } @@ -339,37 +361,27 @@ ptr_t arg; /* to the beginning. */ while (IS_FORWARDING_ADDR_OR_NIL(candidate_hdr)) { h = FORWARDED_ADDR(h,candidate_hdr); - r = (word)h + HDR_BYTES; + r = (word)h; candidate_hdr = HDR(h); } if (candidate_hdr -> hb_map == GC_invalid_map) return(0); /* Make sure r points to the beginning of the object */ r &= ~(WORDS_TO_BYTES(1) - 1); { - register int offset = (char *)r - (char *)(HBLKPTR(r)); + register int offset = HBLKDISPL(r); register signed_word sz = candidate_hdr -> hb_sz; - -# ifdef ALL_INTERIOR_POINTERS - register map_entry_type map_entry; + register signed_word map_entry; - map_entry = MAP_ENTRY((candidate_hdr -> hb_map), offset); - if (map_entry == OBJ_INVALID) { - return(0); - } - r -= WORDS_TO_BYTES(map_entry); - limit = r + WORDS_TO_BYTES(sz); -# else - register int correction; - - offset = BYTES_TO_WORDS(offset - HDR_BYTES); - correction = offset % sz; - r -= (WORDS_TO_BYTES(correction)); - limit = r + WORDS_TO_BYTES(sz); - if (limit > (word)(h + 1) - && sz <= BYTES_TO_WORDS(HBLKSIZE) - HDR_WORDS) { + map_entry = MAP_ENTRY((candidate_hdr -> hb_map), offset); + if (map_entry > CPP_MAX_OFFSET) { + map_entry = (signed_word)(BYTES_TO_WORDS(offset)) % sz; + } + r -= WORDS_TO_BYTES(map_entry); + limit = r + WORDS_TO_BYTES(sz); + if (limit > (word)(h + 1) + && sz <= BYTES_TO_WORDS(HBLKSIZE)) { return(0); - } -# endif + } if ((word)p >= limit) return(0); } return((GC_PTR)r); @@ -390,11 +402,7 @@ ptr_t arg; register hdr * hhdr = HDR(p); sz = WORDS_TO_BYTES(hhdr -> hb_sz); - if (sz < 0) { - return(-sz); - } else { - return(sz); - } + return(sz); } size_t GC_get_heap_size GC_PROTO(()) @@ -412,6 +420,11 @@ size_t GC_get_bytes_since_gc GC_PROTO(()) return ((size_t) WORDS_TO_BYTES(GC_words_allocd)); } +size_t GC_get_total_bytes GC_PROTO(()) +{ + return ((size_t) WORDS_TO_BYTES(GC_words_allocd+GC_words_allocd_before_gc)); +} + GC_bool GC_is_initialized = FALSE; void GC_init() @@ -426,58 +439,100 @@ void GC_init() } +#if defined(MSWIN32) || defined(MSWINCE) + CRITICAL_SECTION GC_write_cs; +#endif + #ifdef MSWIN32 - extern void GC_init_win32(); + extern void GC_init_win32 GC_PROTO((void)); #endif extern void GC_setpagesize(); +#ifdef UNIX_LIKE + +extern void GC_set_and_save_fault_handler GC_PROTO((void (*handler)(int))); + +static void looping_handler(sig) +int sig; +{ + GC_err_printf1("Caught signal %d: looping in handler\n", sig); + for(;;); +} +#endif + void GC_init_inner() { -# ifndef THREADS +# if !defined(THREADS) && defined(GC_ASSERTIONS) word dummy; # endif + word initial_heap_sz = (word)MINHINCR; if (GC_is_initialized) return; - GC_setpagesize(); - GC_exclude_static_roots(beginGC_arrays, end_gc_area); # ifdef PRINTSTATS - if ((ptr_t)endGC_arrays != (ptr_t)(&GC_obj_kinds)) { - GC_printf0("Reordering linker, didn't exclude obj_kinds\n"); - } + GC_print_stats = 1; # endif + if (0 != GETENV("GC_PRINT_STATS")) { + GC_print_stats = 1; + } + if (0 != GETENV("GC_FIND_LEAK")) { + GC_find_leak = 1; + } + if (0 != GETENV("GC_ALL_INTERIOR_POINTERS")) { + GC_all_interior_pointers = 1; + } + if (0 != GETENV("GC_DONT_GC")) { + GC_dont_gc = 1; + } +# ifdef UNIX_LIKE + if (0 != GETENV("GC_LOOP_ON_ABORT")) { + GC_set_and_save_fault_handler(looping_handler); + } +# endif + /* 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(MSWIN32) || defined(MSWINCE) + InitializeCriticalSection(&GC_write_cs); +# endif + GC_setpagesize(); + GC_exclude_static_roots(beginGC_arrays, endGC_arrays); + GC_exclude_static_roots(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); +# endif # ifdef MSWIN32 GC_init_win32(); # endif # if defined(SEARCH_FOR_DATA_START) - /* This doesn't really work if the collector is in a shared library. */ GC_init_linux_data_start(); # endif -# ifdef SOLARIS_THREADS - GC_thr_init(); - /* We need dirty bits in order to find live stack sections. */ - GC_dirty_init(); +# if defined(NETBSD) && defined(__ELF__) + GC_init_netbsd_elf(); # endif # if defined(IRIX_THREADS) || defined(LINUX_THREADS) \ - || defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS) + || defined(HPUX_THREADS) || defined(SOLARIS_THREADS) GC_thr_init(); # endif +# ifdef SOLARIS_THREADS + /* We need dirty bits in order to find live stack sections. */ + GC_dirty_init(); +# endif # if !defined(THREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) \ || defined(IRIX_THREADS) || defined(LINUX_THREADS) \ || defined(HPUX_THREADS) if (GC_stackbottom == 0) { GC_stackbottom = GC_get_stack_base(); +# if defined(LINUX) && defined(IA64) + GC_register_stackbottom = GC_get_register_stack_base(); +# endif } # endif - if (sizeof (ptr_t) != sizeof(word)) { - ABORT("sizeof (ptr_t) != sizeof(word)\n"); - } - if (sizeof (signed_word) != sizeof(word)) { - ABORT("sizeof (signed_word) != sizeof(word)\n"); - } - if (sizeof (struct hblk) != HBLKSIZE) { - ABORT("sizeof (struct hblk) != HBLKSIZE\n"); - } + GC_ASSERT(sizeof (ptr_t) == sizeof(word)); + GC_ASSERT(sizeof (signed_word) == sizeof(word)); + GC_ASSERT(sizeof (struct hblk) == HBLKSIZE); # ifndef THREADS # if defined(STACK_GROWS_UP) && defined(STACK_GROWS_DOWN) ABORT( @@ -488,40 +543,16 @@ void GC_init_inner() "One of STACK_GROWS_UP and STACK_GROWS_DOWN should be defd\n"); # endif # ifdef STACK_GROWS_DOWN - if ((word)(&dummy) > (word)GC_stackbottom) { - GC_err_printf0( - "STACK_GROWS_DOWN is defd, but stack appears to grow up\n"); -# ifndef UTS4 /* Compiler bug workaround */ - GC_err_printf2("sp = 0x%lx, GC_stackbottom = 0x%lx\n", - (unsigned long) (&dummy), - (unsigned long) GC_stackbottom); -# endif - ABORT("stack direction 3\n"); - } + GC_ASSERT((word)(&dummy) <= (word)GC_stackbottom); # else - if ((word)(&dummy) < (word)GC_stackbottom) { - GC_err_printf0( - "STACK_GROWS_UP is defd, but stack appears to grow down\n"); - GC_err_printf2("sp = 0x%lx, GC_stackbottom = 0x%lx\n", - (unsigned long) (&dummy), - (unsigned long) GC_stackbottom); - ABORT("stack direction 4"); - } + GC_ASSERT((word)(&dummy) >= (word)GC_stackbottom); # endif # endif # if !defined(_AUX_SOURCE) || defined(__GNUC__) - if ((word)(-1) < (word)0) { - GC_err_printf0("The type word should be an unsigned integer type\n"); - GC_err_printf0("It appears to be signed\n"); - ABORT("word"); - } + GC_ASSERT((word)(-1) > (word)0); + /* word should be unsigned */ # endif - if ((signed_word)(-1) >= (signed_word)0) { - GC_err_printf0( - "The type signed_word should be a signed integer type\n"); - GC_err_printf0("It appears to be unsigned\n"); - ABORT("signed_word"); - } + GC_ASSERT((signed_word)(-1) < (signed_word)0); /* Add initial guess of root sets. Do this first, since sbrk(0) */ /* might be used. */ @@ -529,7 +560,18 @@ void GC_init_inner() GC_init_headers(); GC_bl_init(); GC_mark_init(); - if (!GC_expand_hp_inner((word)MINHINCR)) { + { + 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); + } + } + if (!GC_expand_hp_inner(initial_heap_sz)) { GC_err_printf0("Can't start up: not enough memory\n"); EXIT(); } @@ -554,11 +596,11 @@ void GC_init_inner() GC_pcr_install(); # endif /* Get black list set up */ - GC_gcollect_inner(); + if (!GC_dont_precollect) GC_gcollect_inner(); + GC_is_initialized = TRUE; # ifdef STUBBORN_ALLOC GC_stubborn_init(); # endif - GC_is_initialized = TRUE; /* Convince lint that some things are used */ # ifdef LINT { @@ -623,27 +665,43 @@ out: } -#ifdef MSWIN32 -# define LOG_FILE "gc.log" +#if defined(MSWIN32) || defined(MSWINCE) +# define LOG_FILE _T("gc.log") - HANDLE GC_stdout = 0, GC_stderr; - int GC_tmp; - DWORD GC_junk; + HANDLE GC_stdout = 0; - void GC_set_files() + void GC_deinit() { - if (!GC_stdout) { - GC_stdout = CreateFile(LOG_FILE, GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, CREATE_ALWAYS, FILE_FLAG_WRITE_THROUGH, - NULL); - if (INVALID_HANDLE_VALUE == GC_stdout) ABORT("Open of log file failed"); - } - if (GC_stderr == 0) { - GC_stderr = GC_stdout; - } + if (GC_is_initialized) { + DeleteCriticalSection(&GC_write_cs); + } } + int GC_write(buf, len) + char * buf; + size_t len; + { + BOOL tmp; + DWORD written; + if (len == 0) + return 0; + EnterCriticalSection(&GC_write_cs); + if (GC_stdout == INVALID_HANDLE_VALUE) { + return -1; + } else if (GC_stdout == 0) { + GC_stdout = CreateFile(LOG_FILE, GENERIC_WRITE, + FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, CREATE_ALWAYS, FILE_FLAG_WRITE_THROUGH, + NULL); + if (GC_stdout == INVALID_HANDLE_VALUE) ABORT("Open of log file failed"); + } + tmp = WriteFile(GC_stdout, buf, len, &written, NULL); + if (!tmp) + DebugBreak(); + LeaveCriticalSection(&GC_write_cs); + return tmp ? (int)written : -1; + } + #endif #if defined(OS2) || defined(MACOS) @@ -662,7 +720,7 @@ int GC_tmp; /* Should really be local ... */ } #endif -#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32) +#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32) && !defined(MSWINCE) int GC_stdout = 1; int GC_stderr = 2; # if !defined(AMIGA) @@ -670,7 +728,7 @@ int GC_tmp; /* Should really be local ... */ # endif #endif -#if !defined(MSWIN32) && !defined(OS2) && !defined(MACOS) +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(OS2) && !defined(MACOS) int GC_write(fd, buf, len) int fd; char *buf; @@ -693,11 +751,8 @@ size_t len; } #endif /* UN*X */ -#ifdef MSWIN32 -# define WRITE(f, buf, len) (GC_set_files(), \ - GC_tmp = WriteFile((f), (buf), \ - (len), &GC_junk, NULL),\ - (GC_tmp? 1 : -1)) +#if defined(MSWIN32) || defined(MSWINCE) +# define WRITE(f, buf, len) GC_write(buf, len) #else # if defined(OS2) || defined(MACOS) # define WRITE(f, buf, len) (GC_set_files(), \ @@ -715,7 +770,7 @@ size_t len; /* same size as long, and that the format conversions expect something */ /* of that size. */ void GC_printf(format, a, b, c, d, e, f) -char * format; +GC_CONST char * format; long a, b, c, d, e, f; { char buf[1025]; @@ -728,7 +783,7 @@ long a, b, c, d, e, f; } void GC_err_printf(format, a, b, c, d, e, f) -char * format; +GC_CONST char * format; long a, b, c, d, e, f; { char buf[1025]; @@ -740,11 +795,20 @@ long a, b, c, d, e, f; } void GC_err_puts(s) -char *s; +GC_CONST char *s; { if (WRITE(GC_stderr, s, strlen(s)) < 0) ABORT("write to stderr failed"); } +#if defined(LINUX) && !defined(SMALL_CONFIG) +void GC_err_write(buf, len) +GC_CONST char *buf; +size_t len; +{ + if (WRITE(GC_stderr, buf, len) < 0) ABORT("write to stderr failed"); +} +#endif + # if defined(__STDC__) || defined(__cplusplus) void GC_default_warn_proc(char *msg, GC_word arg) # else @@ -777,10 +841,26 @@ GC_warn_proc GC_current_warn_proc = GC_default_warn_pr #ifndef PCR void GC_abort(msg) -char * msg; +GC_CONST char * msg; { - GC_err_printf1("%s\n", msg); - (void) abort(); +# if defined(MSWIN32) + (void) MessageBoxA(NULL, msg, "Fatal error in gc", MB_ICONERROR|MB_OK); + DebugBreak(); +# else + GC_err_printf1("%s\n", msg); +# endif + 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(;;); + } +# ifdef MSWIN32 + DebugBreak(); +# else + (void) abort(); +# endif } #endif @@ -843,4 +923,4 @@ void GC_dump() GC_print_block_list(); } -# endif /* NO_DEBUGGING */ +#endif /* NO_DEBUGGING */