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/*
Copyright Rene Rivera 2005.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
*/
#include "jam.h"
#include "hash.h"
#include <time.h>
#include <assert.h>
static profile_frame * profile_stack = 0;
static struct hash * profile_hash = 0;
static profile_info profile_other = { "[OTHER]", 0, 0, 0, 0, 0 };
static profile_info profile_total = { "[TOTAL]", 0, 0, 0, 0, 0 };
profile_frame * profile_init( char * rulename, profile_frame * frame )
{
if ( DEBUG_PROFILE ) profile_enter( rulename, frame );
return frame;
}
void profile_enter( char * rulename, profile_frame * frame )
{
if ( DEBUG_PROFILE )
{
clock_t start = clock();
profile_info info;
profile_info * p = &info;
if ( !rulename ) p = &profile_other;
if ( !profile_hash && rulename )
profile_hash = hashinit( sizeof( profile_info ), "profile" );
info.name = rulename;
if ( rulename && hashenter( profile_hash, (HASHDATA * *)&p ) )
p->cumulative = p->net = p->num_entries = p->stack_count = p->memory = 0;
++p->num_entries;
++p->stack_count;
frame->info = p;
frame->caller = profile_stack;
profile_stack = frame;
frame->entry_time = clock();
frame->overhead = 0;
frame->subrules = 0;
/* caller pays for the time it takes to play with the hash table */
if ( frame->caller )
frame->caller->overhead += frame->entry_time - start;
}
}
void profile_memory( long mem )
{
if ( DEBUG_PROFILE )
if ( profile_stack && profile_stack->info )
profile_stack->info->memory += mem;
}
void profile_exit( profile_frame * frame )
{
if ( DEBUG_PROFILE )
{
/* Cumulative time for this call. */
clock_t t = clock() - frame->entry_time - frame->overhead;
/* If this rule is already present on the stack, don't add the time for
* this instance.
*/
if ( frame->info->stack_count == 1 )
frame->info->cumulative += t;
/* Net time does not depend on presense of the same rule in call stack.
*/
frame->info->net += t - frame->subrules;
if ( frame->caller )
{
/* Caller's cumulative time must account for this overhead. */
frame->caller->overhead += frame->overhead;
frame->caller->subrules += t;
}
/* Pop this stack frame. */
--frame->info->stack_count;
profile_stack = frame->caller;
}
}
static void dump_profile_entry( void * p_, void * ignored )
{
profile_info * p = (profile_info *)p_;
unsigned long mem_each = ( p->memory / ( p->num_entries ? p->num_entries : 1 ) );
double cumulative = p->cumulative;
double net = p->net;
double q = p->net;
q /= ( p->num_entries ? p->num_entries : 1 );
cumulative /= CLOCKS_PER_SEC;
net /= CLOCKS_PER_SEC;
q /= CLOCKS_PER_SEC;
if ( !ignored )
{
profile_total.cumulative += p->net;
profile_total.memory += p->memory;
}
printf( "%10ld %12.6f %12.6f %12.8f %10ld %10ld %s\n", p->num_entries,
cumulative, net, q, p->memory, mem_each, p->name );
}
void profile_dump()
{
if ( profile_hash )
{
printf( "%10s %12s %12s %12s %10s %10s %s\n", "--count--", "--gross--",
"--net--", "--each--", "--mem--", "--each--", "--name--" );
hashenumerate( profile_hash, dump_profile_entry, 0 );
dump_profile_entry( &profile_other, 0 );
dump_profile_entry( &profile_total, (void *)1 );
}
}
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