diff options
Diffstat (limited to 'final/runtime/test/tasking/bug_proxy_task_dep_waiting.c')
-rw-r--r-- | final/runtime/test/tasking/bug_proxy_task_dep_waiting.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/final/runtime/test/tasking/bug_proxy_task_dep_waiting.c b/final/runtime/test/tasking/bug_proxy_task_dep_waiting.c new file mode 100644 index 0000000..e6dd895 --- /dev/null +++ b/final/runtime/test/tasking/bug_proxy_task_dep_waiting.c @@ -0,0 +1,134 @@ +// RUN: %libomp-compile -lpthread && %libomp-run +// The runtime currently does not get dependency information from GCC. +// UNSUPPORTED: gcc + +#include <stdio.h> +#include <omp.h> +#include <pthread.h> +#include "omp_my_sleep.h" + +/* + An explicit task can have a dependency on a target task. If it is not + directly satisfied, the runtime should not wait but resume execution. +*/ + +// Compiler-generated code (emulation) +typedef long kmp_intptr_t; +typedef int kmp_int32; + +typedef char bool; + +typedef struct ident { + kmp_int32 reserved_1; /**< might be used in Fortran; see above */ + kmp_int32 flags; /**< also f.flags; KMP_IDENT_xxx flags; KMP_IDENT_KMPC identifies this union member */ + kmp_int32 reserved_2; /**< not really used in Fortran any more; see above */ +#if USE_ITT_BUILD + /* but currently used for storing region-specific ITT */ + /* contextual information. */ +#endif /* USE_ITT_BUILD */ + kmp_int32 reserved_3; /**< source[4] in Fortran, do not use for C++ */ + char const *psource; /**< String describing the source location. + The string is composed of semi-colon separated fields which describe the source file, + the function and a pair of line numbers that delimit the construct. + */ +} ident_t; + +typedef struct kmp_depend_info { + kmp_intptr_t base_addr; + size_t len; + struct { + bool in:1; + bool out:1; + } flags; +} kmp_depend_info_t; + +struct kmp_task; +typedef kmp_int32 (* kmp_routine_entry_t)( kmp_int32, struct kmp_task * ); + +typedef struct kmp_task { /* GEH: Shouldn't this be aligned somehow? */ + void * shareds; /**< pointer to block of pointers to shared vars */ + kmp_routine_entry_t routine; /**< pointer to routine to call for executing task */ + kmp_int32 part_id; /**< part id for the task */ +} kmp_task_t; + +#ifdef __cplusplus +extern "C" { +#endif +kmp_int32 __kmpc_global_thread_num ( ident_t * ); +kmp_task_t* +__kmpc_omp_task_alloc( ident_t *loc_ref, kmp_int32 gtid, kmp_int32 flags, + size_t sizeof_kmp_task_t, size_t sizeof_shareds, + kmp_routine_entry_t task_entry ); +void __kmpc_proxy_task_completed_ooo ( kmp_task_t *ptask ); +kmp_int32 __kmpc_omp_task_with_deps ( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * new_task, + kmp_int32 ndeps, kmp_depend_info_t *dep_list, + kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list ); +kmp_int32 +__kmpc_omp_task( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * new_task ); +#ifdef __cplusplus +} +#endif + +void *target(void *task) +{ + my_sleep( 0.1 ); + __kmpc_proxy_task_completed_ooo((kmp_task_t*) task); + return NULL; +} + +pthread_t target_thread; + +// User's code +int task_entry(kmp_int32 gtid, kmp_task_t *task) +{ + pthread_create(&target_thread, NULL, &target, task); + return 0; +} + +int main() +{ + int dep; + +/* + * Corresponds to: + #pragma omp target nowait depend(out: dep) + { + my_sleep( 0.1 ); + } +*/ + kmp_depend_info_t dep_info; + dep_info.base_addr = (long) &dep; + dep_info.len = sizeof(int); + // out = inout per spec and runtime expects this + dep_info.flags.in = 1; + dep_info.flags.out = 1; + + kmp_int32 gtid = __kmpc_global_thread_num(NULL); + kmp_task_t *proxy_task = __kmpc_omp_task_alloc(NULL,gtid,17,sizeof(kmp_task_t),0,&task_entry); + __kmpc_omp_task_with_deps(NULL,gtid,proxy_task,1,&dep_info,0,NULL); + + int first_task_finished = 0; + #pragma omp task shared(first_task_finished) depend(inout: dep) + { + first_task_finished = 1; + } + + int second_task_finished = 0; + #pragma omp task shared(second_task_finished) depend(in: dep) + { + second_task_finished = 1; + } + + // check that execution has been resumed and the runtime has not waited + // for the dependencies to be satisfied. + int error = (first_task_finished == 1); + error += (second_task_finished == 1); + + #pragma omp taskwait + + // by now all tasks should have finished + error += (first_task_finished != 1); + error += (second_task_finished != 1); + + return error; +} |