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mem_pool: add GIT_TRACE_MEMPOOL support

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Add tracing around initializing and discarding mempools. In discard report
on the amount of memory unused in the current block to help tune setting
the initial_size.

Signed-off-by: Ben Peart <benpeart@microsoft.com>
This commit is contained in:
Ben Peart
2018-10-04 18:10:21 -04:00
committed by Johannes Schindelin
parent 6453004b6d
commit f66b44d5ba
1 changed files with 10 additions and 0 deletions
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10
mem-pool.c
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@@ -4,7 +4,9 @@
#include "git-compat-util.h" #include "git-compat-util.h"
#include "mem-pool.h" #include "mem-pool.h"
#include "trace.h"
static struct trace_key trace_mem_pool = TRACE_KEY_INIT(MEMPOOL);
#define BLOCK_GROWTH_SIZE (1024 * 1024 - sizeof(struct mp_block)) #define BLOCK_GROWTH_SIZE (1024 * 1024 - sizeof(struct mp_block))
/* /*
@@ -62,12 +64,20 @@ void mem_pool_init(struct mem_pool *pool, size_t initial_size)
if (initial_size > 0) if (initial_size > 0)
mem_pool_alloc_block(pool, initial_size, NULL); mem_pool_alloc_block(pool, initial_size, NULL);
trace_printf_key(&trace_mem_pool,
"mem_pool (%p): init (%"PRIuMAX") initial size\n",
(void *)pool, (uintmax_t)initial_size);
} }
void mem_pool_discard(struct mem_pool *pool, int invalidate_memory) void mem_pool_discard(struct mem_pool *pool, int invalidate_memory)
{ {
struct mp_block *block, *block_to_free; struct mp_block *block, *block_to_free;
trace_printf_key(&trace_mem_pool,
"mem_pool (%p): discard (%"PRIuMAX") unused\n",
(void *)pool,
(uintmax_t)(pool->mp_block->end - pool->mp_block->next_free));
block = pool->mp_block; block = pool->mp_block;
while (block) while (block)
{ {