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-rw-r--r--mem-pool.c52
1 files changed, 46 insertions, 6 deletions
diff --git a/mem-pool.c b/mem-pool.c
index c34846d..a3ba388 100644
--- a/mem-pool.c
+++ b/mem-pool.c
@@ -4,6 +4,7 @@
#include "git-compat-util.h"
#include "mem-pool.h"
+#include "gettext.h"
#define BLOCK_GROWTH_SIZE (1024 * 1024 - sizeof(struct mp_block))
@@ -89,9 +90,7 @@ void *mem_pool_alloc(struct mem_pool *pool, size_t len)
struct mp_block *p = NULL;
void *r;
- /* round up to a 'GIT_MAX_ALIGNMENT' alignment */
- if (len & (GIT_MAX_ALIGNMENT - 1))
- len += GIT_MAX_ALIGNMENT - (len & (GIT_MAX_ALIGNMENT - 1));
+ len = DIV_ROUND_UP(len, GIT_MAX_ALIGNMENT) * GIT_MAX_ALIGNMENT;
if (pool->mp_block &&
pool->mp_block->end - pool->mp_block->next_free >= len)
@@ -99,9 +98,9 @@ void *mem_pool_alloc(struct mem_pool *pool, size_t len)
if (!p) {
if (len >= (pool->block_alloc / 2))
- return mem_pool_alloc_block(pool, len, pool->mp_block);
-
- p = mem_pool_alloc_block(pool, pool->block_alloc, NULL);
+ p = mem_pool_alloc_block(pool, len, pool->mp_block);
+ else
+ p = mem_pool_alloc_block(pool, pool->block_alloc, NULL);
}
r = p->next_free;
@@ -109,6 +108,47 @@ void *mem_pool_alloc(struct mem_pool *pool, size_t len)
return r;
}
+static char *mem_pool_strvfmt(struct mem_pool *pool, const char *fmt,
+ va_list ap)
+{
+ struct mp_block *block = pool->mp_block;
+ char *next_free = block ? block->next_free : NULL;
+ size_t available = block ? block->end - block->next_free : 0;
+ va_list cp;
+ int len, len2;
+ size_t size;
+ char *ret;
+
+ va_copy(cp, ap);
+ len = vsnprintf(next_free, available, fmt, cp);
+ va_end(cp);
+ if (len < 0)
+ die(_("unable to format message: %s"), fmt);
+
+ size = st_add(len, 1); /* 1 for NUL */
+ ret = mem_pool_alloc(pool, size);
+
+ /* Shortcut; relies on mem_pool_alloc() not touching buffer contents. */
+ if (ret == next_free)
+ return ret;
+
+ len2 = vsnprintf(ret, size, fmt, ap);
+ if (len2 != len)
+ BUG("your vsnprintf is broken (returns inconsistent lengths)");
+ return ret;
+}
+
+char *mem_pool_strfmt(struct mem_pool *pool, const char *fmt, ...)
+{
+ va_list ap;
+ char *ret;
+
+ va_start(ap, fmt);
+ ret = mem_pool_strvfmt(pool, fmt, ap);
+ va_end(ap);
+ return ret;
+}
+
void *mem_pool_calloc(struct mem_pool *pool, size_t count, size_t size)
{
size_t len = st_mult(count, size);