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Added extra debug information to memory_buffer_alloc_status()

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This commit is contained in:
Paul Bakker 2013-07-03 14:45:05 +02:00
parent bd5524471a
commit 891998e0c3
1 changed files with 35 additions and 0 deletions
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35
library/memory_buffer_alloc.c
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@ -65,6 +65,13 @@ typedef struct
size_t largest_free; size_t largest_free;
size_t current_alloc_size; size_t current_alloc_size;
int verify; int verify;
#if defined(POLARSSL_MEMORY_DEBUG)
size_t malloc_count;
size_t free_count;
size_t total_used;
size_t maximum_used;
size_t header_count;
#endif
} }
buffer_alloc_ctx; buffer_alloc_ctx;
@ -206,12 +213,21 @@ static void *buffer_alloc_malloc( size_t len )
if( cur == NULL ) if( cur == NULL )
return( NULL ); return( NULL );
#if defined(POLARSSL_MEMORY_DEBUG)
heap.malloc_count++;
#endif
// Found location, split block if > memory_header + 4 room left // Found location, split block if > memory_header + 4 room left
// //
if( cur->size - len < sizeof(memory_header) + POLARSSL_MEMORY_ALIGN_MULTIPLE ) if( cur->size - len < sizeof(memory_header) + POLARSSL_MEMORY_ALIGN_MULTIPLE )
{ {
cur->alloc = 1; cur->alloc = 1;
#if defined(POLARSSL_MEMORY_DEBUG)
heap.total_used += cur->size;
if( heap.total_used > heap.maximum_used)
heap.maximum_used = heap.total_used;
#endif
#if defined(POLARSSL_MEMORY_BACKTRACE) #if defined(POLARSSL_MEMORY_BACKTRACE)
trace_cnt = backtrace( trace_buffer, MAX_BT ); trace_cnt = backtrace( trace_buffer, MAX_BT );
cur->trace = backtrace_symbols( trace_buffer, trace_cnt ); cur->trace = backtrace_symbols( trace_buffer, trace_cnt );
@ -245,6 +261,12 @@ static void *buffer_alloc_malloc( size_t len )
cur->size = len; cur->size = len;
cur->next = new; cur->next = new;
#if defined(POLARSSL_MEMORY_DEBUG)
heap.header_count++;
heap.total_used += cur->size;
if( heap.total_used > heap.maximum_used)
heap.maximum_used = heap.total_used;
#endif
#if defined(POLARSSL_MEMORY_BACKTRACE) #if defined(POLARSSL_MEMORY_BACKTRACE)
trace_cnt = backtrace( trace_buffer, MAX_BT ); trace_cnt = backtrace( trace_buffer, MAX_BT );
cur->trace = backtrace_symbols( trace_buffer, trace_cnt ); cur->trace = backtrace_symbols( trace_buffer, trace_cnt );
@ -290,10 +312,18 @@ static void buffer_alloc_free( void *ptr )
hdr->alloc = 0; hdr->alloc = 0;
#if defined(POLARSSL_MEMORY_DEBUG)
heap.free_count++;
heap.total_used -= hdr->size;
#endif
// Regroup with block before // Regroup with block before
// //
if( hdr->prev != NULL && hdr->prev->alloc == 0 ) if( hdr->prev != NULL && hdr->prev->alloc == 0 )
{ {
#if defined(POLARSSL_MEMORY_DEBUG)
heap.header_count--;
#endif
hdr->prev->size += sizeof(memory_header) + hdr->size; hdr->prev->size += sizeof(memory_header) + hdr->size;
hdr->prev->next = hdr->next; hdr->prev->next = hdr->next;
old = hdr; old = hdr;
@ -312,6 +342,9 @@ static void buffer_alloc_free( void *ptr )
// //
if( hdr->next != NULL && hdr->next->alloc == 0 ) if( hdr->next != NULL && hdr->next->alloc == 0 )
{ {
#if defined(POLARSSL_MEMORY_DEBUG)
heap.header_count--;
#endif
hdr->size += sizeof(memory_header) + hdr->next->size; hdr->size += sizeof(memory_header) + hdr->next->size;
old = hdr->next; old = hdr->next;
hdr->next = hdr->next->next; hdr->next = hdr->next->next;
@ -342,6 +375,8 @@ int memory_buffer_alloc_verify()
#if defined(POLARSSL_MEMORY_DEBUG) #if defined(POLARSSL_MEMORY_DEBUG)
void memory_buffer_alloc_status() void memory_buffer_alloc_status()
{ {
fprintf(stderr, "Current use: %u blocks / %u bytes, max: %u bytes, malloc / free: %u / %u\n", heap.header_count, heap.total_used, heap.maximum_used, heap.malloc_count, heap.free_count);
if( heap.first->next == NULL ) if( heap.first->next == NULL )
fprintf(stderr, "All memory de-allocated in stack buffer\n"); fprintf(stderr, "All memory de-allocated in stack buffer\n");
else else