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Do not call release_pack_memory in malloc wrappers when GIT_TRACE is used 

This avoids a potential race condition when async procedures are
implemented as threads where release_pack_memory() can be called from
different threads without locking under memory pressure.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Johannes Sixt 2010-05-08 17:18:06 +02:00 committed by Junio C Hamano
parent 851c34b04e
commit 3a0942598c
1 changed files with 6 additions and 0 deletions
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6
trace.c
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@ -25,6 +25,10 @@
#include "cache.h" #include "cache.h"
#include "quote.h" #include "quote.h"


void do_nothing(size_t unused)
{
}

/* Get a trace file descriptor from GIT_TRACE env variable. */ /* Get a trace file descriptor from GIT_TRACE env variable. */
static int get_trace_fd(int *need_close) static int get_trace_fd(int *need_close)
{ {
@ -72,6 +76,7 @@ void trace_printf(const char *fmt, ...)
if (!fd) if (!fd)
return; return;


set_try_to_free_routine(do_nothing); /* is never reset */
strbuf_init(&buf, 64); strbuf_init(&buf, 64);
va_start(ap, fmt); va_start(ap, fmt);
len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap); len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);
@ -103,6 +108,7 @@ void trace_argv_printf(const char **argv, const char *fmt, ...)
if (!fd) if (!fd)
return; return;


set_try_to_free_routine(do_nothing); /* is never reset */
strbuf_init(&buf, 64); strbuf_init(&buf, 64);
va_start(ap, fmt); va_start(ap, fmt);
len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap); len = vsnprintf(buf.buf, strbuf_avail(&buf), fmt, ap);