Class: Tacho::Profile

Inherits:
Object
  • Object
show all
Defined in:
ext/tacho/tacho.c

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Object 



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# File 'ext/tacho/tacho.c', line 129

static VALUE tch_profile_initialize(VALUE self) {
    tch_profile* profile = tch_profile_get_profile(self);
    profile->recording = 0;
    return self;
}

Instance Method Details

#start(filename, name, clock_type) ⇒ Object 



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# File 'ext/tacho/tacho.c', line 135

static VALUE tch_profile_start(VALUE self, VALUE filename, VALUE name, VALUE clock_type) {
    tch_profile* profile = tch_profile_get_profile(self);

    struct timespec time;
    uint32_t name_length;
    ID clock_type_id;

    profile->output = fopen(StringValueCStr(filename), "wb");
    profile->buffer_count = 0;

    if (!profile->output) {
        rb_raise(rb_eRuntimeError, "Could not open file %s", StringValueCStr(filename));
        RB_GC_GUARD(filename);
        return Qnil;
    }
    RB_GC_GUARD(filename);

    profile->recording = 1;

    if (NIL_P(clock_type)) {
        profile->clock_type = CLOCK_MONOTONIC;
    } else if (TYPE(clock_type) == T_SYMBOL) {
        clock_type_id = SYM2ID(clock_type);
        if (id_wall == clock_type_id) {
            profile->clock_type = CLOCK_MONOTONIC;
        } else if (id_process == clock_type_id) {
            profile->clock_type = CLOCK_PROCESS_CPUTIME_ID;
        } else if (id_thread == clock_type_id) {
            profile->clock_type = CLOCK_THREAD_CPUTIME_ID;
        } else {
            rb_raise(rb_eTypeError, "not valid value. Must be one of :wall, :process or :thread got :%s", rb_id2name(clock_type_id));
        }
    } else {
        rb_raise(rb_eTypeError, "not valid value. Must be a symbol of one of :wall, :process or :thread");
    }

    clock_gettime(profile->clock_type, &time);
    profile->start_time = (long)time.tv_sec * 1000000000 + (long)time.tv_nsec;
    write_header(profile, 'S', profile->start_time);

    name_length = (uint32_t)RSTRING_LEN(name);
    fwrite(&name_length, sizeof(uint32_t), 1, profile->output);
    fwrite(RSTRING_PTR(name), name_length, 1, profile->output);
    RB_GC_GUARD(name);

    profile->tracepoint = rb_tracepoint_new(Qnil, RUBY_EVENT_CALL | RUBY_EVENT_RETURN, tacho_event, profile);
    rb_tracepoint_enable(profile->tracepoint);

    return Qnil;
}

#stop ⇒ Object 



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# File 'ext/tacho/tacho.c', line 186

static VALUE tch_profile_stop(VALUE self) {
    tch_profile* profile = tch_profile_get_profile(self);

    struct timespec time;
    uint64_t itime;

    if (profile->recording) {
        clock_gettime(profile->clock_type, &time);
        itime = (long)time.tv_sec * 1000000000 + (long)time.tv_nsec;
        write_header(profile, 'F', itime);

        fflush(profile->output);
        fclose(profile->output);

        rb_tracepoint_disable(profile->tracepoint);

        profile->recording = 0;
    } else {
        rb_raise(rb_eRuntimeError, "Not currently recording");
    }

    return Qnil;
}