thodg/libgit2/tests/object/cache.c

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• Hash : faebc1c6
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  Date : 2016-06-20T17:44:04
  

  threads: split up OS-dependent thread code

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• tests/object/cache.c

• #include "clar_libgit2.h"
  #include "repository.h"
  
  static git_repository *g_repo;
  
  void test_object_cache__initialize(void)
  {
  	g_repo = NULL;
  }
  
  void test_object_cache__cleanup(void)
  {
  	git_repository_free(g_repo);
  	g_repo = NULL;
  
  	git_libgit2_opts(GIT_OPT_SET_CACHE_OBJECT_LIMIT, (int)GIT_OBJ_BLOB, (size_t)0);
  }
  
  static struct {
  	git_otype type;
  	const char *sha;
  } g_data[] = {
  	/* HEAD */
  	{ GIT_OBJ_BLOB, "a8233120f6ad708f843d861ce2b7228ec4e3dec6" }, /* README */
  	{ GIT_OBJ_BLOB, "3697d64be941a53d4ae8f6a271e4e3fa56b022cc" }, /* branch_file.txt */
  	{ GIT_OBJ_BLOB, "a71586c1dfe8a71c6cbf6c129f404c5642ff31bd" }, /* new.txt */
  
  	/* refs/heads/subtrees */
  	{ GIT_OBJ_BLOB, "1385f264afb75a56a5bec74243be9b367ba4ca08" }, /* README */
  	{ GIT_OBJ_TREE, "f1425cef211cc08caa31e7b545ffb232acb098c3" }, /* ab */
  	{ GIT_OBJ_BLOB, "d6c93164c249c8000205dd4ec5cbca1b516d487f" }, /* ab/4.txt */
  	{ GIT_OBJ_TREE, "9a03079b8a8ee85a0bee58bf9be3da8b62414ed4" }, /* ab/c */
  	{ GIT_OBJ_BLOB, "270b8ea76056d5cad83af921837702d3e3c2924d" }, /* ab/c/3.txt */
  	{ GIT_OBJ_TREE, "b6361fc6a97178d8fc8639fdeed71c775ab52593" }, /* ab/de */
  	{ GIT_OBJ_BLOB, "e7b4ad382349ff96dd8199000580b9b1e2042eb0" }, /* ab/de/2.txt */
  	{ GIT_OBJ_TREE, "3259a6bd5b57fb9c1281bb7ed3167b50f224cb54" }, /* ab/de/fgh */
  	{ GIT_OBJ_BLOB, "1f67fc4386b2d171e0d21be1c447e12660561f9b" }, /* ab/de/fgh/1.txt */
  	{ GIT_OBJ_BLOB, "45b983be36b73c0788dc9cbcb76cbb80fc7bb057" }, /* branch_file.txt */
  	{ GIT_OBJ_BLOB, "fa49b077972391ad58037050f2a75f74e3671e92" }, /* new.txt */
  
  	/* refs/heads/chomped */
  	{ GIT_OBJ_BLOB, "0266163a49e280c4f5ed1e08facd36a2bd716bcf" }, /* readme.txt */
  
  	{ 0, NULL },
  	{ 0, NULL }
  };
  
  void test_object_cache__cache_everything(void)
  {
  	int i, start;
  	git_oid oid;
  	git_odb_object *odb_obj;
  	git_object *obj;
  	git_odb *odb;
  
  	git_libgit2_opts(
  		GIT_OPT_SET_CACHE_OBJECT_LIMIT, (int)GIT_OBJ_BLOB, (size_t)32767);
  
  	cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
  	cl_git_pass(git_repository_odb(&odb, g_repo));
  
  	start = (int)git_cache_size(&g_repo->objects);
  
  	for (i = 0; g_data[i].sha != NULL; ++i) {
  		int count = (int)git_cache_size(&g_repo->objects);
  
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  
  		/* alternate between loading raw and parsed objects */
  		if ((i & 1) == 0) {
  			cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
  			cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
  			git_odb_object_free(odb_obj);
  		} else {
  			cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  			cl_assert(g_data[i].type == git_object_type(obj));
  			git_object_free(obj);
  		}
  
  		cl_assert_equal_i(count + 1, (int)git_cache_size(&g_repo->objects));
  	}
  
  	cl_assert_equal_i(i, (int)git_cache_size(&g_repo->objects) - start);
  
  	git_odb_free(odb);
  
  	for (i = 0; g_data[i].sha != NULL; ++i) {
  		int count = (int)git_cache_size(&g_repo->objects);
  
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  		cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  		cl_assert(g_data[i].type == git_object_type(obj));
  		git_object_free(obj);
  
  		cl_assert_equal_i(count, (int)git_cache_size(&g_repo->objects));
  	}
  }
  
  void test_object_cache__cache_no_blobs(void)
  {
  	int i, start, nonblobs = 0;
  	git_oid oid;
  	git_odb_object *odb_obj;
  	git_object *obj;
  	git_odb *odb;
  
  	git_libgit2_opts(GIT_OPT_SET_CACHE_OBJECT_LIMIT, (int)GIT_OBJ_BLOB, (size_t)0);
  
  	cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
  	cl_git_pass(git_repository_odb(&odb, g_repo));
  
  	start = (int)git_cache_size(&g_repo->objects);
  
  	for (i = 0; g_data[i].sha != NULL; ++i) {
  		int count = (int)git_cache_size(&g_repo->objects);
  
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  
  		/* alternate between loading raw and parsed objects */
  		if ((i & 1) == 0) {
  			cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
  			cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
  			git_odb_object_free(odb_obj);
  		} else {
  			cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  			cl_assert(g_data[i].type == git_object_type(obj));
  			git_object_free(obj);
  		}
  
  		if (g_data[i].type == GIT_OBJ_BLOB)
  			cl_assert_equal_i(count, (int)git_cache_size(&g_repo->objects));
  		else {
  			cl_assert_equal_i(count + 1, (int)git_cache_size(&g_repo->objects));
  			nonblobs++;
  		}
  	}
  
  	cl_assert_equal_i(nonblobs, (int)git_cache_size(&g_repo->objects) - start);
  
  	git_odb_free(odb);
  }
  
  static void *cache_parsed(void *arg)
  {
  	int i;
  	git_oid oid;
  	git_object *obj;
  
  	for (i = ((int *)arg)[1]; g_data[i].sha != NULL; i += 2) {
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  		cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  		cl_assert(g_data[i].type == git_object_type(obj));
  		git_object_free(obj);
  	}
  
  	for (i = 0; i < ((int *)arg)[1]; i += 2) {
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  		cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  		cl_assert(g_data[i].type == git_object_type(obj));
  		git_object_free(obj);
  	}
  
  	return arg;
  }
  
  static void *cache_raw(void *arg)
  {
  	int i;
  	git_oid oid;
  	git_odb *odb;
  	git_odb_object *odb_obj;
  
  	cl_git_pass(git_repository_odb(&odb, g_repo));
  
  	for (i = ((int *)arg)[1]; g_data[i].sha != NULL; i += 2) {
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  		cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
  		cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
  		git_odb_object_free(odb_obj);
  	}
  
  	for (i = 0; i < ((int *)arg)[1]; i += 2) {
  		cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
  		cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
  		cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
  		git_odb_object_free(odb_obj);
  	}
  
  	git_odb_free(odb);
  
  	return arg;
  }
  
  #define REPEAT 20
  #define THREADCOUNT 50
  
  void test_object_cache__threadmania(void)
  {
  	int try, th, max_i;
  	void *data;
  	void *(*fn)(void *);
  
  #ifdef GIT_THREADS
  	git_thread t[THREADCOUNT];
  #endif
  
  	for (max_i = 0; g_data[max_i].sha != NULL; ++max_i)
  		/* count up */;
  
  	for (try = 0; try < REPEAT; ++try) {
  
  		cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
  
  		for (th = 0; th < THREADCOUNT; ++th) {
  			data = git__malloc(2 * sizeof(int));
  
  			((int *)data)[0] = th;
  			((int *)data)[1] = th % max_i;
  
  			fn = (th & 1) ? cache_parsed : cache_raw;
  
  #ifdef GIT_THREADS
  			cl_git_pass(git_thread_create(&t[th], fn, data));
  #else
  			cl_assert(fn(data) == data);
  			git__free(data);
  #endif
  		}
  
  #ifdef GIT_THREADS
  		for (th = 0; th < THREADCOUNT; ++th) {
  			cl_git_pass(git_thread_join(&t[th], &data));
  			cl_assert_equal_i(th, ((int *)data)[0]);
  			git__free(data);
  		}
  #endif
  
  		git_repository_free(g_repo);
  		g_repo = NULL;
  	}
  }
  
  static void *cache_quick(void *arg)
  {
  	git_oid oid;
  	git_object *obj;
  
  	cl_git_pass(git_oid_fromstr(&oid, g_data[4].sha));
  	cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
  	cl_assert(g_data[4].type == git_object_type(obj));
  	git_object_free(obj);
  
  	return arg;
  }
  
  void test_object_cache__fast_thread_rush(void)
  {
  	int try, th, data[THREADCOUNT*2];
  #ifdef GIT_THREADS
  	git_thread t[THREADCOUNT*2];
  #endif
  
  	for (try = 0; try < REPEAT; ++try) {
  		cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
  
  		for (th = 0; th < THREADCOUNT*2; ++th) {
  			data[th] = th;
  #ifdef GIT_THREADS
  			cl_git_pass(
  				git_thread_create(&t[th], cache_quick, &data[th]));
  #else
  			cl_assert(cache_quick(&data[th]) == &data[th]);
  #endif
  		}
  
  #ifdef GIT_THREADS
  		for (th = 0; th < THREADCOUNT*2; ++th) {
  			void *rval;
  			cl_git_pass(git_thread_join(&t[th], &rval));
  			cl_assert_equal_i(th, *((int *)rval));
  		}
  #endif
  
  		git_repository_free(g_repo);
  		g_repo = NULL;
  	}
  }
  

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