text: // SPDX-License-Identifier: GPL-2.0
  #include <stdlib.h>
  #include <string.h>
  #include <sys/types.h>
  #include <unistd.h>
  #include <sys/prctl.h>
  #include "tests.h"
  #include "thread_map.h"
  #include "debug.h"
  #include "event.h"
  #include "util/synthetic-events.h"
  #include <linux/zalloc.h>
  #include <perf/event.h>
  
  struct perf_sample;
  struct perf_tool;
  struct machine;
  
  #define NAME	(const char *) "perf"
  #define NAMEUL	(unsigned long) NAME
  
  int test__thread_map(struct test *test __maybe_unused, int subtest __maybe_unused)
  {
  	struct perf_thread_map *map;
  
  	TEST_ASSERT_VAL("failed to set process name",
  			!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  
  	/* test map on current pid */
  	map = thread_map__new_by_pid(getpid());
  	TEST_ASSERT_VAL("failed to alloc map", map);
  
  	thread_map__read_comms(map);
  
  	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  	TEST_ASSERT_VAL("wrong pid",
  			perf_thread_map__pid(map, 0) == getpid());
  	TEST_ASSERT_VAL("wrong comm",
  			perf_thread_map__comm(map, 0) &&
  			!strcmp(perf_thread_map__comm(map, 0), NAME));
  	TEST_ASSERT_VAL("wrong refcnt",
  			refcount_read(&map->refcnt) == 1);
  	perf_thread_map__put(map);
  
  	/* test dummy pid */
  	map = perf_thread_map__new_dummy();
  	TEST_ASSERT_VAL("failed to alloc map", map);
  
  	thread_map__read_comms(map);
  
  	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  	TEST_ASSERT_VAL("wrong pid", perf_thread_map__pid(map, 0) == -1);
  	TEST_ASSERT_VAL("wrong comm",
  			perf_thread_map__comm(map, 0) &&
  			!strcmp(perf_thread_map__comm(map, 0), "dummy"));
  	TEST_ASSERT_VAL("wrong refcnt",
  			refcount_read(&map->refcnt) == 1);
  	perf_thread_map__put(map);
  	return 0;
  }
  
  static int process_event(struct perf_tool *tool __maybe_unused,
  			 union perf_event *event,
  			 struct perf_sample *sample __maybe_unused,
  			 struct machine *machine __maybe_unused)
  {
  	struct perf_record_thread_map *map = &event->thread_map;
  	struct perf_thread_map *threads;
  
  	TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
  	TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
  	TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
  
  	threads = thread_map__new_event(&event->thread_map);
  	TEST_ASSERT_VAL("failed to alloc map", threads);
  
  	TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
  	TEST_ASSERT_VAL("wrong pid",
  			perf_thread_map__pid(threads, 0) == getpid());
  	TEST_ASSERT_VAL("wrong comm",
  			perf_thread_map__comm(threads, 0) &&
  			!strcmp(perf_thread_map__comm(threads, 0), NAME));
  	TEST_ASSERT_VAL("wrong refcnt",
  			refcount_read(&threads->refcnt) == 1);
  	perf_thread_map__put(threads);
  	return 0;
  }
  
  int test__thread_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused)
  {
  	struct perf_thread_map *threads;
  
  	TEST_ASSERT_VAL("failed to set process name",
  			!prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  
  	/* test map on current pid */
  	threads = thread_map__new_by_pid(getpid());
  	TEST_ASSERT_VAL("failed to alloc map", threads);
  
  	thread_map__read_comms(threads);
  
  	TEST_ASSERT_VAL("failed to synthesize map",
  		!perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
  
  	perf_thread_map__put(threads);
  	return 0;
  }
  
  int test__thread_map_remove(struct test *test __maybe_unused, int subtest __maybe_unused)
  {
  	struct perf_thread_map *threads;
  	char *str;
  
  	TEST_ASSERT_VAL("failed to allocate map string",
  			asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
  
  	threads = thread_map__new_str(str, NULL, 0, false);
  	free(str);
  
  	TEST_ASSERT_VAL("failed to allocate thread_map",
  			threads);
  
  	if (verbose > 0)
  		thread_map__fprintf(threads, stderr);
  
  	TEST_ASSERT_VAL("failed to remove thread",
  			!thread_map__remove(threads, 0));
  
  	TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
  
  	if (verbose > 0)
  		thread_map__fprintf(threads, stderr);
  
  	TEST_ASSERT_VAL("failed to remove thread",
  			!thread_map__remove(threads, 0));
  
  	TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
  
  	if (verbose > 0)
  		thread_map__fprintf(threads, stderr);
  
  	TEST_ASSERT_VAL("failed to not remove thread",
  			thread_map__remove(threads, 0));
  
  	perf_thread_map__put(threads);
  	return 0;
  }
  