From 4e2127b0e5cb6411123e16dd562626cd70814a9a Mon Sep 17 00:00:00 2001
From: José Fonseca <jrfonseca@tungstengraphics.com>
Date: Tue, 8 Apr 2008 11:30:36 +0900
Subject: gallium: Allow to debug memory leaks in nested scopes.

---
 src/gallium/auxiliary/util/p_debug_mem.c | 16 ++++++++--------
 src/gallium/include/pipe/p_debug.h       |  6 +++---
 2 files changed, 11 insertions(+), 11 deletions(-)

(limited to 'src/gallium')

diff --git a/src/gallium/auxiliary/util/p_debug_mem.c b/src/gallium/auxiliary/util/p_debug_mem.c
index c160afe5b7f..97ec9c5b392 100644
--- a/src/gallium/auxiliary/util/p_debug_mem.c
+++ b/src/gallium/auxiliary/util/p_debug_mem.c
@@ -70,8 +70,7 @@ struct debug_memory_header
 
 static struct list_head list = { &list, &list };
 
-static unsigned long start_no = 0;
-static unsigned long end_no = 0;
+static unsigned long last_no = 0;
 
 
 void *
@@ -84,7 +83,7 @@ debug_malloc(const char *file, unsigned line, const char *function,
    if(!hdr)
       return NULL;
  
-   hdr->no = end_no++;
+   hdr->no = last_no++;
    hdr->file = file;
    hdr->line = line;
    hdr->function = function;
@@ -147,14 +146,14 @@ debug_realloc(const char *file, unsigned line, const char *function,
    return new_ptr;
 }
 
-void
-debug_memory_reset(void)
+unsigned long
+debug_memory_begin(void)
 {
-   start_no = end_no;
+   return last_no;
 }
 
 void 
-debug_memory_report(void)
+debug_memory_end(unsigned long start_no)
 {
    struct list_head *entry;
 
@@ -164,7 +163,8 @@ debug_memory_report(void)
       void *ptr;
       hdr = LIST_ENTRY(struct debug_memory_header, entry, head);
       ptr = (void *)((char *)hdr + sizeof(*hdr));
-      if(hdr->no >= start_no)
+      if(start_no <= hdr->no && hdr->no < last_no ||
+	 last_no < start_no && (hdr->no < last_no || start_no <= hdr->no))
 	 debug_printf("%s:%u:%s: %u bytes at %p not freed\n",
 		      hdr->file, hdr->line, hdr->function,
 		      hdr->size, ptr);
diff --git a/src/gallium/include/pipe/p_debug.h b/src/gallium/include/pipe/p_debug.h
index 9e52ad9a374..235c47abacf 100644
--- a/src/gallium/include/pipe/p_debug.h
+++ b/src/gallium/include/pipe/p_debug.h
@@ -304,11 +304,11 @@ void *
 debug_realloc(const char *file, unsigned line, const char *function,
               void *old_ptr, size_t old_size, size_t new_size );
 
-void 
-debug_memory_reset(void);
+unsigned long
+debug_memory_begin(void);
 
 void 
-debug_memory_report(void);
+debug_memory_end(unsigned long beginning);
 
 
 #ifdef	__cplusplus
-- 
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