mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Matt Stanley
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
#ifndef PSX_HOST_SAMPLER_H
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#define PSX_HOST_SAMPLER_H
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/* Always-on host CPU sampler for the emulation thread (debug-tools builds).
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* See host_sampler.c; TCP host_profile; tools/host_profile.py. */
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* 1 Mi samples: ~17 minutes at 1 kHz, enough to keep a whole load-transition route (16 MB,
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* debug-tools builds only) so a hitch found afterwards still has its host call sites. */
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#define HOST_SAMPLER_CAP 1048576u
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typedef struct HostSample {
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uint64_t rva; /* instruction pointer minus the executable's base */
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uint32_t frame; /* guest frame (s_frame_count) */
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uint32_t in_pass; /* 1 while a render pass ran */
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} HostSample;
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/* Start sampling the calling thread (the emulation thread). Idempotent. */
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void host_sampler_start(void);
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int host_sampler_supported(void);
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/* Total samples recorded; the ring holds the newest HOST_SAMPLER_CAP. */
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uint64_t host_sampler_seq(void);
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uint64_t host_sampler_image_base(void);
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/* Sample `seq`, if it is still in the ring. */
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int host_sampler_get(uint64_t seq, HostSample *out);
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#ifdef __cplusplus
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}
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#endif
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#endif
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