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/*-----------------------------------------------------------------*-C-*---
* File: handc/runtime/profile.c
*
* Copyright (C)1997 Donovan Kolbly <d.kolbly@rscheme.org>
* as part of the RScheme project, licensed for free use.
* See <http://www.rscheme.org/> for the latest information.
*
* File version: 1.7
* File mod date: 1997.11.29 23:10:51
* System build: v0.7.2, 97.12.21
*
* Purpose: User-level profiling support
*------------------------------------------------------------------------*/
#include <string.h>
#include <rscheme/runtime.h>
#include <rscheme/vinsns.h>
#include <rscheme/hashmain.h>
#include <rscheme/osglue.h>
#if ACCUM_GF_CACHE_HISTOGRAM
int gf_cache_hit_depth[100];
obj collect_gf_cache_histogram( rs_bool reset_q )
{
obj v = alloc( SLOT(100), vector_class );
unsigned i;
for (i=0; i<100; i++)
gvec_write_init_non_ptr( v, SLOT(i), int2fx(gf_cache_hit_depth[i]) );
if (reset_q)
for (i=0; i<100; i++)
gf_cache_hit_depth[i] = 0;
return v;
}
#else
obj collect_gf_cache_histogram( rs_bool reset_q )
{
return make0(vector_class);
}
#endif
#if !PROFILING_HOOKS
void rsprof_start( const char *path, rs_bool append_q )
{
scheme_error( "profiling not enabled", 0 );
}
rs_bool rsprof_stop( void )
{
rsprof_start(NULL,NO);
return NO;
}
void rsprof_collect_objects( obj setup, obj otbl )
{
rsprof_start(NULL,NO);
}
void rsprof_app_defn_rec( obj key, obj val )
{
rsprof_start(NULL,NO);
}
#else
int rsprof_active = 0;
static FILE *proff = NULL;
static char *myprof_buff, *myprof_buff_ptr, *myprof_buff_lim;
#define MYPROF_BUFF_SIZE (1024*1024)
static void rsprof_cal_start( void );
static void rsprof_cal_stop( void );
static void rsprof_cal_realtime( void );
static void futz_around( int n );
static void bflush( void );
static int scan_profile_file( const char *path,
int (*proc)( struct RS_pr_header *rec,
void *info ),
void *info );
/* control items */
void rsprof_start( const char *path, rs_bool append_q )
{
if (proff)
fclose(proff);
rsprof_active = 0;
proff = fopen( path, append_q ? "a" : "w" );
if (!proff)
os_error( "fopen", 1, make_string(path) );
if (!append_q)
rsprof_active = 1;
myprof_buff = malloc( MYPROF_BUFF_SIZE + 128 );
myprof_buff_ptr = myprof_buff;
myprof_buff_lim = myprof_buff + MYPROF_BUFF_SIZE;
if (rsprof_active)
{
rsprof_cal_realtime();
futz_around(10);
rsprof_cal_realtime();
futz_around(10);
rsprof_cal_realtime();
rsprof_cal_start();
rsprof_cal_stop();
}
}
rs_bool rsprof_stop( void )
{
if (proff)
{
if (rsprof_active)
{
rsprof_cal_start();
rsprof_cal_stop();
}
bflush();
rsprof_active = 0;
if (fclose( proff ) != 0)
os_error( "fclose", 0 );
proff = NULL;
return YES;
}
else
return NO;
}
/*
* scans a file, looking for objects that it would be nice to have
* named in the output. In particular, <<class>> and <template> objects.
*
* Note that it is up to the user to guarantee that any classes and
* templates used during the tracing run are still around!
*/
static int collect_named_objects( struct RS_pr_header *rec, void *info )
{
obj tmp_o, otbl;
otbl = *(obj *)info;
switch (rec->code)
{
case RSPROF_MT_RETURNS:
case RSPROF_MT_BJUMPS:
case RSPROF_MT_JUMPS:
case RSPROF_MT_FAILS:
case RSPROF_MT_INTR:
case RSPROF_MT_DONE:
case RSPROF_GC_WORK:
case RSPROF_RESTORED:
case RSPROF_CAPTURED:
case RSPROF_OBJ_DIED:
case RSPROF_SAVES:
case RSPROF_DECL_NAME:
case RSPROF_NOP:
case RSPROF_CAL_START:
case RSPROF_CAL_STOP:
case RSPROF_CAL_REALTIME:
break;
case RSPROF_MT_CALLS:
tmp_o = ((struct RS_pr_MT_CALLS *)rec)->tmpl;
objecttable_insert( otbl, obj_hash(tmp_o), tmp_o, tmp_o );
break;
case RSPROF_MT_START:
tmp_o = ((struct RS_pr_MT_START *)rec)->tmpl;
objecttable_insert( otbl, obj_hash(tmp_o), tmp_o, tmp_o );
break;
case RSPROF_OBJ_ALLOCED:
tmp_o = ((struct RS_pr_OBJ_ALLOCED *)rec)->item_class;
objecttable_insert( otbl, obj_hash(tmp_o), tmp_o, tmp_o );
break;
}
return 0;
}
void rsprof_collect_objects( obj setup, obj otbl )
{
if (STRING_P(setup))
{
scan_profile_file( string_text( setup ),
collect_named_objects,
&otbl );
}
else
scheme_error( "rsprof_collect_templates: "
"argument ~s not a pathname string", 1, setup );
}
#define SCAN_BUF_SIZE (8192)
static int scan_profile_file( const char *path,
int (*proc)( struct RS_pr_header *rec,
void *info ),
void *info )
{
FILE *f;
char *p, *lim, *pre_lim, temp[SCAN_BUF_SIZE];
obj tmp_o;
int n, rc;
f = fopen( path, "r" );
if (!f)
os_error( "fopen", 1, make_string(path) );
p = pre_lim = temp;
n = fread( temp, 1, SCAN_BUF_SIZE, f );
if (n < 0)
n = 0;
lim = p + n;
pre_lim = lim - 300;
if (pre_lim < p)
pre_lim = p;
rc = 0;
while ((rc == 0) && (p < lim))
{
if (p >= pre_lim)
{
memmove( temp, p, lim - p );
lim = temp + (lim - p);
p = temp;
n = fread( lim, 1, SCAN_BUF_SIZE - (lim - p), f );
if (n > 0)
{
lim += n;
pre_lim = lim - 300;
if (pre_lim < p)
pre_lim = lim;
}
else
pre_lim = lim;
}
/*printf( "scanning a type-%d record (%u bytes)\n",
((struct RS_pr_header *)p)->code,
((struct RS_pr_header *)p)->rec_bytes );*/
rc = proc( (struct RS_pr_header *)p, info );
p += ((struct RS_pr_header *)p)->rec_bytes;
}
fclose(f);
return rc;
}
static void bflush( void )
{
size_t n = myprof_buff_ptr - myprof_buff;
if (n != fwrite( myprof_buff, 1, n, proff ))
os_error( "fwrite", 0 );
myprof_buff_ptr = myprof_buff;
}
#define EMIT_RECORD_HR(v,t,hr) struct RS_pr_ ## t *v; \
do { \
if ((myprof_buff_ptr+(hr))>=myprof_buff_lim)\
bflush(); \
v = (struct RS_pr_ ## t *) myprof_buff_ptr; \
myprof_buff_ptr+=sizeof(struct RS_pr_ ## t);\
v->hdr.code = RSPROF_ ## t; \
v->hdr.var_len = 0; \
v->hdr.rec_bytes=sizeof(struct RS_pr_ ## t);\
} while (0)
#define EMIT_RECORD(v,t) EMIT_RECORD_HR(v,t,0)
/* hooks to indicate how the current monotone is being exited... */
void rsprof_mt_calls( obj proc, obj tmpl )
{
EMIT_RECORD(r, MT_CALLS);
r->tmpl = tmpl;
r->argc = arg_count_reg;
}
void rsprof_mt_returns( void )
{
EMIT_RECORD(r, MT_RETURNS);
}
void rsprof_mt_bjumps( void )
{
EMIT_RECORD(r, MT_BJUMPS);
}
void rsprof_mt_jumps( void )
{
EMIT_RECORD(r, MT_JUMPS);
}
void rsprof_mt_fails( void )
{
EMIT_RECORD(r, MT_FAILS);
}
/* hooks to keep track of the stack state */
void rsprof_saves( void )
{
EMIT_RECORD(r, SAVES);
}
void rsprof_contn_captured( obj contn )
{
EMIT_RECORD(r, CAPTURED);
r->contn = contn;
}
void rsprof_contn_restored( obj contn )
{
EMIT_RECORD(r, RESTORED);
r->contn = contn;
}
void rsprof_mt_intr( void )
{
EMIT_RECORD(r, MT_INTR);
}
void rsprof_mt_start( jump_addr entry_pt )
{
EMIT_RECORD_HR(r, MT_START, 120);
r->tstamp = rsprof_time();
r->tmpl = literals_reg;
}
#define tstamped(op) EMIT_RECORD(r,op); r->tstamp = rsprof_time()
static void rsprof_cal_start( void )
{
tstamped( CAL_START );
}
static void rsprof_cal_stop( void )
{
tstamped( CAL_STOP );
}
static void rsprof_cal_realtime( void )
{
tstamped( CAL_REALTIME );
gettimeofday( &r->systime, NULL );
}
void rsprof_mt_done( void )
{
tstamped( MT_DONE );
}
void rsprof_gc_work( void )
{
tstamped( GC_WORK );
}
void rsprof_obj_alloced( obj item, obj obj_class, UINT_32 bytes )
{
EMIT_RECORD(r,OBJ_ALLOCED);
r->item = item;
r->item_class = obj_class;
r->bytes = bytes;
}
void rsprof_obj_died( obj item )
{
EMIT_RECORD(r,OBJ_DIED);
r->item = item;
}
void rsprof_app_defn_rec( obj key, obj val )
{
int len, bytes;
if (!proff)
return;
len = string_length(val);
if (len > 250)
len = 250;
bytes = (len + 3) & ~3;
{
EMIT_RECORD_HR(r,DECL_NAME,300);
r->hdr.rec_bytes = sizeof( struct RS_pr_DECL_NAME ) - 4 + bytes;
r->item = key;
r->hdr.var_len = len;
memcpy( r->name, string_text(val), bytes );
myprof_buff_ptr = ((char *)r) + r->hdr.rec_bytes;
}
}
#define M (256)
static int cmp_int( const void *pa, const void *pb )
{
int a = *(const int *)pa;
int b = *(const int *)pb;
if (a < b)
return -1;
else if (a == b)
return 0;
else
return 1;
}
static void futz_around( int n )
{
int i, temp[M];
while (n > 0)
{
for (i=0; i<M; i++)
temp[i] = rand();
qsort( temp, M, sizeof(int), cmp_int );
n--;
}
}
#endif
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