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util: initialize locale_t with a static object

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_mesa_strtod and _mesa_strtof may be called from multiple threads.  They need
to be thread-safe.

v2: platform checks are now done in configure.ac

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chia-I Wu 2014-08-20 14:40:24 +08:00 • committed by Kenneth Graunke
parent b039dbfffd
commit 61c3d49388
1 changed files with 8 additions and 10 deletions
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18
src/util/strtod.cpp
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@ -36,6 +36,12 @@
#include "strtod.h"
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
static struct locale_initializer {
locale_initializer() { loc = newlocale(LC_CTYPE_MASK, "C", NULL); }
locale_t loc;
} loc_init;
#endif
/**
* Wrapper around strtod which uses the "C" locale so the decimal
@ -45,11 +51,7 @@ double
_mesa_strtod(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
static locale_t loc = NULL;
if (!loc) {
loc = newlocale(LC_CTYPE_MASK, "C", NULL);
}
return strtod_l(s, end, loc);
return strtod_l(s, end, loc_init.loc);
#else
return strtod(s, end);
#endif
@ -64,11 +66,7 @@ float
_mesa_strtof(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
static locale_t loc = NULL;
if (!loc) {
loc = newlocale(LC_CTYPE_MASK, "C", NULL);
}
return strtof_l(s, end, loc);
return strtof_l(s, end, loc_init.loc);
#elif defined(HAVE_STRTOF)
return strtof(s, end);
#else