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add WEBP_DSP_INIT / WEBP_DSP_INIT_FUNC

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this internalizes the init checks and provides stronger synchronization
with pthreads when available while still allowing VP8GetCPUInfo to be
modified (mostly for testing purposes). windows is left as is since a
critical section or mutex would cause a leak.

Change-Id: Ieb997e014f2805c0ae39c16f13337663521356f4
(cherry picked from commit d77bf512bd)
This commit is contained in:
James Zern
2018-04-16 20:19:54 -07:00
parent c1cb86af5f
commit 0d5fad46cf
15 changed files with 54 additions and 104 deletions
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9
src/dsp/cost.c
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@ -378,12 +378,7 @@ extern void VP8EncDspCostInitMIPS32(void);
extern void VP8EncDspCostInitMIPSdspR2(void);
extern void VP8EncDspCostInitSSE2(void);
static volatile VP8CPUInfo cost_last_cpuinfo_used =
(VP8CPUInfo)&cost_last_cpuinfo_used;
WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspCostInit(void) {
if (cost_last_cpuinfo_used == VP8GetCPUInfo) return;
WEBP_DSP_INIT_FUNC(VP8EncDspCostInit) {
VP8GetResidualCost = GetResidualCost_C;
VP8SetResidualCoeffs = SetResidualCoeffs_C;
@ -405,8 +400,6 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspCostInit(void) {
}
#endif
}
cost_last_cpuinfo_used = VP8GetCPUInfo;
}
//------------------------------------------------------------------------------