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trace: when profiling, dump a sampling trace #671

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trace: when profiling, dump a sampling trace #671

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43 changes: 43 additions & 0 deletions pkg/noun/trace.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@ static c3_o _ct_lop_o;
/// Nock PID.
static pid_t _nock_pid_i = 0;

/// dump trace file.
static FILE* _filt_u = NULL;

/// JSON trace file.
static FILE* _file_u = NULL;

Expand Down Expand Up @@ -209,6 +212,28 @@ u3t_samp(void)
return;
}

u3_noun don = u3R->pro.don;
while ( u3_nul != don ) {
u3_noun dot = u3h(don);

while ( u3_nul != dot ) {
u3_noun dit = u3h(dot);
c3_w len_w = u3r_met(3, dit);
c3_c* dit_c = ( c3y == u3a_is_cat(dit) )
? &dit
: ((u3a_atom*)u3a_to_ptr(dit))->buf_w;
fprintf(_filt_u, "/%.*s", len_w, dit_c);

dot = u3t(dot);
}
fprintf(_filt_u, "\n");

don = u3t(don);
}
fprintf(_filt_u, "1\n\n");

return;

c3_w old_wag = u3C.wag_w;
u3C.wag_w &= ~u3o_debug_cpu;
u3C.wag_w &= ~u3o_trace;
Expand Down Expand Up @@ -547,6 +572,24 @@ u3t_init(void)
u3T.far_o = c3n;
u3T.coy_o = c3n;
u3T.euq_o = c3n;

if ( ( u3C.wag_w & u3o_debug_cpu ) && !_filt_u ) {
c3_c fil_c[2048];
snprintf(fil_c, 2048, "%s/.urb/put/trace", u3C.dir_c);

struct stat st;
if ( (-1 == stat(fil_c, &st))
&& (-1 == c3_mkdir(fil_c, 0700)) )
{
fprintf(stderr, "mkdir: %s failed: %s\r\n", fil_c, strerror(errno));
return;
}

snprintf(fil_c, 2048, "%s/.urb/put/trace/dump.txt", u3C.dir_c);

_filt_u = c3_fopen(fil_c, "w");
fprintf(_filt_u, "\n\n\n");
}
}

c3_w
Expand Down
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