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memory_limit: use git_env_ulong() to parse GIT_ALLOC_LIMIT

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GIT_ALLOC_LIMIT limits xmalloc()'s size, which is of type size_t.
Better use git_env_ulong() to parse the environment variable, so
that the postfixes 'k', 'm', and 'g' can be used; and use size_t to
store the limit for consistency.  The change to size_t has no direct
practical impact, because the environment variable is only meant to
be used for our own tests, and we use it to test small sizes.

The cast of size in the call to die() is changed to uintmax_t to
match the format string PRIuMAX.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Steffen Prohaska 2014-08-26 17:23:22 +02:00 committed by Junio C Hamano
parent 23b0c4782e
commit 9927d9627f
2 changed files with 9 additions and 8 deletions
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2
t/t1050-large.sh
View File

@ -13,7 +13,7 @@ test_expect_success setup '
echo X | dd of=large2 bs=1k seek=2000 &&
echo X | dd of=large3 bs=1k seek=2000 &&
echo Y | dd of=huge bs=1k seek=2500 &&
GIT_ALLOC_LIMIT=1500 &&
GIT_ALLOC_LIMIT=1500k &&
export GIT_ALLOC_LIMIT
'

15
wrapper.c
View File

@ -11,14 +11,15 @@ static void (*try_to_free_routine)(size_t size) = do_nothing;
static void memory_limit_check(size_t size)
{
static int limit = -1;
if (limit == -1) {
const char *env = getenv("GIT_ALLOC_LIMIT");
limit = env ? atoi(env) * 1024 : 0;
static size_t limit = 0;
if (!limit) {
limit = git_env_ulong("GIT_ALLOC_LIMIT", 0);
if (!limit)
limit = SIZE_MAX;
}
if (limit && size > limit)
die("attempting to allocate %"PRIuMAX" over limit %d",
(intmax_t)size, limit);
if (size > limit)
die("attempting to allocate %"PRIuMAX" over limit %"PRIuMAX,
(uintmax_t)size, (uintmax_t)limit);
}
try_to_free_t set_try_to_free_routine(try_to_free_t routine)