From 0402d388cb9803652c0f9a52ba7dcb6029fdd0b9 Mon Sep 17 00:00:00 2001 From: marha Date: Sat, 30 Apr 2011 15:25:48 +0000 Subject: Added extra needed files --- .../src/gallium/auxiliary/util/u_debug_refcnt.c | 191 +++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 mesalib/src/gallium/auxiliary/util/u_debug_refcnt.c (limited to 'mesalib/src/gallium/auxiliary/util/u_debug_refcnt.c') diff --git a/mesalib/src/gallium/auxiliary/util/u_debug_refcnt.c b/mesalib/src/gallium/auxiliary/util/u_debug_refcnt.c new file mode 100644 index 000000000..0a242e124 --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_debug_refcnt.c @@ -0,0 +1,191 @@ +/************************************************************************** + * + * Copyright 2010 Luca Barbieri + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#if defined(DEBUG) && (!defined(PIPE_OS_WINDOWS) || defined(PIPE_SUBSYSTEM_WINDOWS_USER)) + +/* see http://www.mozilla.org/performance/refcnt-balancer.html for what do with the output + * on Linux, use tools/addr2line.sh to postprocess it before anything else + **/ +#include +#include +#include +#include +#include +#include +#include +#include + +int debug_refcnt_state; + +struct os_stream* stream; + +/* TODO: maybe move this serial machinery to a stand-alone module and expose it? */ +pipe_static_mutex(serials_mutex); + +static struct util_hash_table* serials_hash; +static unsigned serials_last; + +static unsigned hash_ptr(void* p) +{ + return (unsigned)(uintptr_t)p; +} + +static int compare_ptr(void* a, void* b) +{ + if(a == b) + return 0; + else if(a < b) + return -1; + else + return 1; +} + +static boolean debug_serial(void* p, unsigned* pserial) +{ + unsigned serial; + boolean found = TRUE; +#ifdef PIPE_SUBSYSTEM_WINDOWS_USER + static boolean first = TRUE; + + if (first) { + pipe_mutex_init(serials_mutex); + first = FALSE; + } +#endif + + pipe_mutex_lock(serials_mutex); + if(!serials_hash) + serials_hash = util_hash_table_create(hash_ptr, compare_ptr); + serial = (unsigned)(uintptr_t)util_hash_table_get(serials_hash, p); + if(!serial) + { + /* time to stop logging... (you'll have a 100 GB logfile at least at this point) + * TODO: avoid this + */ + serial = ++serials_last; + if(!serial) + { + debug_error("More than 2^32 objects detected, aborting.\n"); + os_abort(); + } + + util_hash_table_set(serials_hash, p, (void*)(uintptr_t)serial); + found = FALSE; + } + pipe_mutex_unlock(serials_mutex); + *pserial = serial; + return found; +} + +static void debug_serial_delete(void* p) +{ + pipe_mutex_lock(serials_mutex); + util_hash_table_remove(serials_hash, p); + pipe_mutex_unlock(serials_mutex); +} + +#define STACK_LEN 64 + +static void dump_stack(const char* symbols[STACK_LEN]) +{ + unsigned i; + for(i = 0; i < STACK_LEN; ++i) + { + if(symbols[i]) + os_stream_printf(stream, "%s\n", symbols[i]); + } + os_stream_write(stream, "\n", 1); +} + +void debug_reference_slowpath(const struct pipe_reference* p, debug_reference_descriptor get_desc, int change) +{ + if(debug_refcnt_state < 0) + return; + + if(!debug_refcnt_state) + { + const char* filename = debug_get_option("GALLIUM_REFCNT_LOG", NULL); + if(filename && filename[0]) + stream = os_file_stream_create(filename); + + if(stream) + debug_refcnt_state = 1; + else + debug_refcnt_state = -1; + } + + if(debug_refcnt_state > 0) + { + struct debug_stack_frame frames[STACK_LEN]; + const char* symbols[STACK_LEN]; + char buf[1024]; + + unsigned i; + unsigned refcnt = p->count; + unsigned serial; + boolean existing = debug_serial((void*)p, &serial); + + debug_backtrace_capture(frames, 1, STACK_LEN); + for(i = 0; i < STACK_LEN; ++i) + { + if(frames[i].function) + symbols[i] = debug_symbol_name_cached(frames[i].function); + else + symbols[i] = 0; + } + + get_desc(buf, p); + + if(!existing) + { + os_stream_printf(stream, "<%s> %p %u Create\n", buf, p, serial); + dump_stack(symbols); + + /* this is there to provide a gradual change even if we don't see the initialization */ + for(i = 1; i <= refcnt - change; ++i) + { + os_stream_printf(stream, "<%s> %p %u AddRef %u\n", buf, p, serial, i); + dump_stack(symbols); + } + } + + if(change) + { + os_stream_printf(stream, "<%s> %p %u %s %u\n", buf, p, serial, change > 0 ? "AddRef" : "Release", refcnt); + dump_stack(symbols); + } + + if(!refcnt) + { + debug_serial_delete((void*)p); + os_stream_printf(stream, "<%s> %p %u Destroy\n", buf, p, serial); + dump_stack(symbols); + } + + os_stream_flush(stream); + } +} +#endif -- cgit v1.2.3