*
**************************************************************************/
-#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 <util/u_debug.h>
-#include <util/u_debug_refcnt.h>
-#include <util/u_debug_stack.h>
-#include <util/u_debug_symbol.h>
-#include <util/u_string.h>
-#include <util/u_hash_table.h>
-#include <os/os_thread.h>
-#include <os/os_stream.h>
+#if defined(DEBUG)
+
+/**
+ * If the GALLIUM_REFCNT_LOG env var is defined as a filename, gallium
+ * reference counting will be logged to the file.
+ *
+ * See http://www-archive.mozilla.org/performance/refcnt-balancer.html
+ * for what to do with the output on Linux, use tools/addr2line.sh to
+ * postprocess it before anything else.
+ */
+
+#include <stdio.h>
+
+#include "util/u_debug.h"
+#include "util/u_debug_refcnt.h"
+#include "util/u_debug_stack.h"
+#include "util/u_debug_symbol.h"
+#include "util/u_string.h"
+#include "util/u_hash_table.h"
+#include "os/os_thread.h"
int debug_refcnt_state;
-struct os_stream* stream;
+static FILE *stream;
-/* TODO: maybe move this serial machinery to a stand-alone module and expose it? */
-static pipe_mutex serials_mutex;
-static struct util_hash_table* serials_hash;
+/* TODO: maybe move this serial machinery to a stand-alone module and
+ * expose it?
+ */
+static mtx_t serials_mutex = _MTX_INITIALIZER_NP;
+
+static struct util_hash_table *serials_hash;
static unsigned serials_last;
-static unsigned hash_ptr(void* p)
+
+static unsigned
+hash_ptr(void *p)
{
- return (unsigned)(uintptr_t)p;
+ return (unsigned) (uintptr_t) p;
}
-static int compare_ptr(void* a, void* b)
+
+static int
+compare_ptr(void *a, void *b)
{
- if(a == b)
+ if (a == b)
return 0;
- else if(a < b)
+ else if (a < b)
return -1;
else
return 1;
}
-static boolean debug_serial(void* p, unsigned* pserial)
+
+/**
+ * Return a small integer serial number for the given pointer.
+ */
+static boolean
+debug_serial(void *p, unsigned *pserial)
{
unsigned serial;
boolean found = TRUE;
- pipe_mutex_lock(serials_mutex);
- if(!serials_hash)
+#ifdef PIPE_OS_WINDOWS
+ static boolean first = TRUE;
+
+ if (first) {
+ (void) mtx_init(&serials_mutex, mtx_plain);
+ first = FALSE;
+ }
+#endif
+
+ mtx_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 = (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)
- {
+ 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);
+ util_hash_table_set(serials_hash, p, (void *) (uintptr_t) serial);
found = FALSE;
}
- pipe_mutex_unlock(serials_mutex);
+ mtx_unlock(&serials_mutex);
+
*pserial = serial;
+
return found;
}
-static void debug_serial_delete(void* p)
+
+/**
+ * Free the serial number for the given pointer.
+ */
+static void
+debug_serial_delete(void *p)
{
- pipe_mutex_lock(serials_mutex);
+ mtx_lock(&serials_mutex);
util_hash_table_remove(serials_hash, p);
- pipe_mutex_unlock(serials_mutex);
+ mtx_unlock(&serials_mutex);
}
+
#define STACK_LEN 64
-static void dump_stack(const char* symbols[STACK_LEN])
+/**
+ * Log a reference count change to the log file (if enabled).
+ * This is called via the pipe_reference() and debug_reference() functions,
+ * basically whenever a reference count is initialized or changed.
+ *
+ * \param p the refcount being changed (the value is not changed here)
+ * \param get_desc a function which will be called to print an object's
+ * name/pointer into a string buffer during logging
+ * \param change the reference count change which must be +/-1 or 0 when
+ * creating the object and initializing the refcount.
+ */
+void
+debug_reference_slowpath(const struct pipe_reference *p,
+ debug_reference_descriptor get_desc, int change)
{
- 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);
-}
+ assert(change >= -1);
+ assert(change <= 1);
-void debug_reference_slowpath(const struct pipe_reference* p, debug_reference_descriptor get_desc, int change)
-{
- if(debug_refcnt_state < 0)
+ 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 (!debug_refcnt_state) {
+ const char *filename = debug_get_option("GALLIUM_REFCNT_LOG", NULL);
+ if (filename && filename[0])
+ stream = fopen(filename, "wt");
- if(stream)
+ if (stream)
debug_refcnt_state = 1;
else
debug_refcnt_state = -1;
}
- if(debug_refcnt_state > 0)
- {
+ 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);
+ 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 (!existing) {
+ fprintf(stream, "<%s> %p %u Create\n", buf, (void *) p, serial);
+ debug_backtrace_print(stream, frames, STACK_LEN);
+
+ /* this is here to provide a gradual change even if we don't see
+ * the initialization
+ */
+ for (i = 1; i <= refcnt - change; ++i) {
+ fprintf(stream, "<%s> %p %u AddRef %u\n", buf, (void *) p,
+ serial, i);
+ debug_backtrace_print(stream, frames, STACK_LEN);
}
}
- if(change)
- {
- os_stream_printf(stream, "<%s> %p %u %s %u\n", buf, p, serial, change > 0 ? "AddRef" : "Release", refcnt);
- dump_stack(symbols);
+ if (change) {
+ fprintf(stream, "<%s> %p %u %s %u\n", buf, (void *) p, serial,
+ change > 0 ? "AddRef" : "Release", refcnt);
+ debug_backtrace_print(stream, frames, STACK_LEN);
}
- if(!refcnt)
- {
- debug_serial_delete((void*)p);
- os_stream_printf(stream, "<%s> %p %u Destroy\n", buf, p, serial);
- dump_stack(symbols);
+ if (!refcnt) {
+ debug_serial_delete((void *) p);
+ fprintf(stream, "<%s> %p %u Destroy\n", buf, (void *) p, serial);
+ debug_backtrace_print(stream, frames, STACK_LEN);
}
- os_stream_flush(stream);
+ fflush(stream);
}
}
-#endif
+
+#endif /* DEBUG */
projects / mesa.git / blobdiff