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assure synth is initialized once

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This commit is contained in:
derselbst 2017-10-25 18:23:54 +02:00
parent b07ed23cad
commit 39993f3963
1 changed files with 2 additions and 4 deletions
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6
src/synth/fluid_synth.c
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@ -116,7 +116,7 @@ static void fluid_synth_stop_LOCAL (fluid_synth_t *synth, unsigned int id);
*/
/* has the synth module been initialized? */
static int fluid_synth_initialized = 0;
static fluid_atomic_int_t fluid_synth_initialized = 0;
static void fluid_synth_init(void);
static void init_dither(void);
@ -272,8 +272,6 @@ fluid_version_str (void)
static void
fluid_synth_init(void)
{
fluid_synth_initialized++;
#ifdef TRAP_ON_FPE
/* Turn on floating point exception traps */
feenableexcept (FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID);
@ -553,7 +551,7 @@ new_fluid_synth(fluid_settings_t *settings)
int with_chorus = 0;
/* initialize all the conversion tables and other stuff */
if (fluid_synth_initialized == 0)
if (fluid_atomic_int_compare_and_exchange(&fluid_synth_initialized, 0, 1))
{
char buf[64];
if (fluid_settings_str_equal (settings, "synth.volenv", "compliant"))