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Add debug trace messages for taskloop 

llvm-svn: 273299
This commit is contained in:
Jonathan Peyton 2016-06-21 19:18:13 +00:00
parent 1997d8684f
commit d4f397741b
1 changed files with 5 additions and 0 deletions
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5
openmp/runtime/src/kmp_tasking.c
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@ -2971,6 +2971,7 @@ __kmp_taskloop_linear(ident_t *loc, int gtid, kmp_task_t *task,
tc = (upper - lower) / st + 1; tc = (upper - lower) / st + 1;
} }
if(tc == 0) { if(tc == 0) {
KA_TRACE(20, ("__kmpc_taskloop(exit): T#%d zero-trip loop\n", gtid));
// free the pattern task and exit // free the pattern task and exit
__kmp_task_start( gtid, task, current_task ); __kmp_task_start( gtid, task, current_task );
// do not execute anything for zero-trip loop // do not execute anything for zero-trip loop
@ -3011,6 +3012,8 @@ __kmp_taskloop_linear(ident_t *loc, int gtid, kmp_task_t *task,
KMP_DEBUG_ASSERT(tc == num_tasks * grainsize + extras); KMP_DEBUG_ASSERT(tc == num_tasks * grainsize + extras);
KMP_DEBUG_ASSERT(num_tasks > extras); KMP_DEBUG_ASSERT(num_tasks > extras);
KMP_DEBUG_ASSERT(num_tasks > 0); KMP_DEBUG_ASSERT(num_tasks > 0);
KA_TRACE(20, ("__kmpc_taskloop: T#%d will launch: num_tasks %lld, grainsize %lld, extras %lld\n",
gtid, num_tasks, grainsize, extras));
// Main loop, launch num_tasks tasks, assign grainsize iterations each task // Main loop, launch num_tasks tasks, assign grainsize iterations each task
for( i = 0; i < num_tasks; ++i ) { for( i = 0; i < num_tasks; ++i ) {
@ -3039,6 +3042,8 @@ __kmp_taskloop_linear(ident_t *loc, int gtid, kmp_task_t *task,
*(kmp_uint64*)((char*)next_task + upper_offset) = upper; *(kmp_uint64*)((char*)next_task + upper_offset) = upper;
if( ptask_dup != NULL ) if( ptask_dup != NULL )
ptask_dup(next_task, task, lastpriv); // set lastprivate flag, construct fistprivates, etc. ptask_dup(next_task, task, lastpriv); // set lastprivate flag, construct fistprivates, etc.
KA_TRACE(20, ("__kmpc_taskloop: T#%d schedule task %p: lower %lld, upper %lld (offsets %p %p)\n",
gtid, next_task, lower, upper, lower_offset, upper_offset));
__kmp_omp_task(gtid, next_task, true); // schedule new task __kmp_omp_task(gtid, next_task, true); // schedule new task
lower = upper + st; // adjust lower bound for the next iteration lower = upper + st; // adjust lower bound for the next iteration
} }