108 lines
2.0 KiB
C
108 lines
2.0 KiB
C
#ifndef OVNI_H
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#define OVNI_H
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <linux/limits.h>
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#define OVNI_MAX_CPU 256
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#define OVNI_MAX_PROC 32
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#define OVNI_MAX_THR 32
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#define OVNI_MAX_LOOM 4
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#define OVNI_TRACEDIR "ovni"
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/* Reserved buffer for event allocation */
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#define OVNI_MAX_EV_BUF (16 * 1024LL * 1024LL * 1024LL)
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/* ----------------------- common ------------------------ */
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union __attribute__((__packed__)) ovni_ev_payload {
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uint8_t u8[16];
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int8_t i8[16];
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uint16_t u16[8];
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int16_t i16[8];
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uint32_t u32[4];
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int32_t i32[4];
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uint64_t u64[2];
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int64_t i64[2];
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};
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struct __attribute__((__packed__)) ovni_ev {
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/* first 4 bits reserved, last 4 for payload size */
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uint8_t flags;
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uint8_t model;
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uint8_t class;
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uint8_t value;
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uint16_t clock_hi;
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uint32_t clock_lo;
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union ovni_ev_payload payload;
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};
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/* ----------------------- runtime ------------------------ */
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/* State of each thread on runtime */
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struct ovni_rthread {
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/* Current cpu the thread is running on. Set to -1 if unbounded or
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* unknown */
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int cpu;
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/* Current thread id */
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pid_t tid;
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/* Clock value of the events being emitted */
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uint64_t clockvalue;
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/* Stream trace file descriptor */
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int streamfd;
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int ready;
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/* The number of bytes filled with events */
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size_t evlen;
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/* Buffer to write events */
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uint8_t *evbuf;
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};
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/* State of each process on runtime */
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struct ovni_rproc {
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/* Path of the process tracedir */
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char dir[PATH_MAX];
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int proc;
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int loom;
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int ncpus;
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clockid_t clockid;
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char procdir[PATH_MAX];
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int ready;
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};
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int ovni_proc_init(int loom, int proc);
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int ovni_thread_init(pid_t tid);
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int ovni_thread_isready();
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void ovni_clock_update();
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void ovni_ev_set_mcv(struct ovni_ev *ev, char *mcv);
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uint64_t ovni_ev_get_clock(struct ovni_ev *ev);
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void ovni_payload_add(struct ovni_ev *ev, uint8_t *buf, int size);
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int ovni_ev_size(struct ovni_ev *ev);
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int ovni_payload_size(struct ovni_ev *ev);
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/* Set the current clock in the event and queue it */
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void ovni_ev(struct ovni_ev *ev);
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int ovni_flush();
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#endif /* OVNI_H */
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