mirror of
https://github.com/DeeJanuz/frametop.git
synced 2026-10-06 05:00:08 +02:00
DeeJanuzandClaude Opus 5.5
1a76d1560b
The history of frame-hands (~/Desktop/Projects/frame-hands on the Frame), filtered to what moves: the camera broker (camd/), the tracker and its offline tools (trackd/), the shared file layouts (include/), the ncnn models, the analysis tools, and the calibration and model helpers they import from the Python prototype. The reverse-engineering notes, probes, camprobe, and the rest of the prototype stay in frame-hands. Unchanged here: the renames to ft- names and Frametop paths follow. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
|
|
* tp - read kernel tracepoints system-wide through perf_event_open.
|
|
*
|
|
* One perf ring per CPU; every event on that CPU writes into it. Field
|
|
* offsets come from the tracefs format files, so kernel layout changes don't
|
|
* silently break parsing. Needs root (or CAP_PERFMON plus tracefs access).
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#define TP_MAX_FIELDS 40
|
|
#define TP_MAX_EVENTS 8
|
|
#define TP_MAX_CPUS 64
|
|
#define TP_MAX_PENDING 2048
|
|
#define TP_MAX_RAW 256
|
|
|
|
typedef struct {
|
|
char name[48];
|
|
int offset;
|
|
int size;
|
|
bool is_signed;
|
|
} tp_field_t;
|
|
|
|
typedef struct {
|
|
char system[32];
|
|
char name[48];
|
|
int id;
|
|
tp_field_t fields[TP_MAX_FIELDS];
|
|
int nfields;
|
|
} tp_event_t;
|
|
|
|
typedef struct {
|
|
const tp_event_t *ev;
|
|
const uint8_t *raw;
|
|
uint32_t rawlen;
|
|
uint64_t time; /* CLOCK_MONOTONIC ns */
|
|
uint32_t cpu;
|
|
uint32_t pid;
|
|
uint32_t tid;
|
|
} tp_sample_t;
|
|
|
|
typedef void (*tp_cb)(void *ctx, const tp_sample_t *s);
|
|
|
|
typedef struct {
|
|
int ncpu;
|
|
int ring_fd[TP_MAX_CPUS];
|
|
void *ring[TP_MAX_CPUS];
|
|
size_t map_len;
|
|
int fds[TP_MAX_CPUS * TP_MAX_EVENTS];
|
|
int nfds;
|
|
int epfd;
|
|
tp_event_t *events[TP_MAX_EVENTS];
|
|
int nevents;
|
|
uint64_t lost;
|
|
uint8_t scratch[65536];
|
|
/* samples drained from all rings, sorted by time before dispatch */
|
|
tp_sample_t pend[TP_MAX_PENDING];
|
|
uint8_t pend_raw[TP_MAX_PENDING][TP_MAX_RAW];
|
|
int npend;
|
|
} tp_t;
|
|
|
|
bool tp_event_load(tp_event_t *ev, const char *system, const char *name, char *err, size_t errn);
|
|
int tp_field(const tp_event_t *ev, const char *name);
|
|
int64_t tp_get(const tp_event_t *ev, int field, const uint8_t *raw, uint32_t rawlen);
|
|
|
|
bool tp_open(tp_t *tp, tp_event_t **events, int nevents, char *err, size_t errn);
|
|
/*
|
|
* Wait up to timeout_ms, then hand every pending sample to cb in time order,
|
|
* across all CPUs. Returns samples read, -1 on error.
|
|
*/
|
|
int tp_poll(tp_t *tp, int timeout_ms, tp_cb cb, void *ctx);
|
|
void tp_close(tp_t *tp);
|