git/t/helper/test-trace2.c
Junio C Hamano ccd12a3d6c Merge branch 'en/header-split-cache-h-part-2'
More header clean-up.

* en/header-split-cache-h-part-2: (22 commits)
  reftable: ensure git-compat-util.h is the first (indirect) include
  diff.h: reduce unnecessary includes
  object-store.h: reduce unnecessary includes
  commit.h: reduce unnecessary includes
  fsmonitor: reduce includes of cache.h
  cache.h: remove unnecessary headers
  treewide: remove cache.h inclusion due to previous changes
  cache,tree: move basic name compare functions from read-cache to tree
  cache,tree: move cmp_cache_name_compare from tree.[ch] to read-cache.c
  hash-ll.h: split out of hash.h to remove dependency on repository.h
  tree-diff.c: move S_DIFFTREE_IFXMIN_NEQ define from cache.h
  dir.h: move DTYPE defines from cache.h
  versioncmp.h: move declarations for versioncmp.c functions from cache.h
  ws.h: move declarations for ws.c functions from cache.h
  match-trees.h: move declarations for match-trees.c functions from cache.h
  pkt-line.h: move declarations for pkt-line.c functions from cache.h
  base85.h: move declarations for base85.c functions from cache.h
  copy.h: move declarations for copy.c functions from cache.h
  server-info.h: move declarations for server-info.c functions from cache.h
  packfile.h: move pack_window and pack_entry from cache.h
  ...
2023-05-09 16:45:46 -07:00

498 lines
13 KiB
C

#include "test-tool.h"
#include "strvec.h"
#include "run-command.h"
#include "exec-cmd.h"
#include "config.h"
#include "repository.h"
#include "trace2.h"
typedef int(fn_unit_test)(int argc, const char **argv);
struct unit_test {
fn_unit_test *ut_fn;
const char *ut_name;
const char *ut_usage;
};
#define MyOk 0
#define MyError 1
static int get_i(int *p_value, const char *data)
{
char *endptr;
if (!data || !*data)
return MyError;
*p_value = strtol(data, &endptr, 10);
if (*endptr || errno == ERANGE)
return MyError;
return MyOk;
}
/*
* Cause process to exit with the requested value via "return".
*
* Rely on test-tool.c:cmd_main() to call trace2_cmd_exit()
* with our result.
*
* Test harness can confirm:
* [] the process-exit value.
* [] the "code" field in the "exit" trace2 event.
* [] the "code" field in the "atexit" trace2 event.
* [] the "name" field in the "cmd_name" trace2 event.
* [] "def_param" events for all of the "interesting" pre-defined
* config settings.
*/
static int ut_001return(int argc, const char **argv)
{
int rc;
if (get_i(&rc, argv[0]))
die("expect <exit_code>");
return rc;
}
/*
* Cause the process to exit with the requested value via "exit()".
*
* Test harness can confirm:
* [] the "code" field in the "exit" trace2 event.
* [] the "code" field in the "atexit" trace2 event.
* [] the "name" field in the "cmd_name" trace2 event.
* [] "def_param" events for all of the "interesting" pre-defined
* config settings.
*/
static int ut_002exit(int argc, const char **argv)
{
int rc;
if (get_i(&rc, argv[0]))
die("expect <exit_code>");
exit(rc);
}
/*
* Send an "error" event with each value in argv. Normally, git only issues
* a single "error" event immediately before issuing an "exit" event (such
* as in die() or BUG()), but multiple "error" events are allowed.
*
* Test harness can confirm:
* [] a trace2 "error" event for each value in argv.
* [] the "name" field in the "cmd_name" trace2 event.
* [] (optional) the file:line in the "exit" event refers to this function.
*/
static int ut_003error(int argc, const char **argv)
{
int k;
if (!argv[0] || !*argv[0])
die("expect <error_message>");
for (k = 0; k < argc; k++)
error("%s", argv[k]);
return 0;
}
/*
* Run a child process and wait for it to finish and exit with its return code.
* test-tool trace2 004child [<child-command-line>]
*
* For example:
* test-tool trace2 004child git version
* test-tool trace2 004child test-tool trace2 001return 0
* test-tool trace2 004child test-tool trace2 004child test-tool trace2 004child
* test-tool trace2 004child git -c alias.xyz=version xyz
*
* Test harness can confirm:
* [] the "name" field in the "cmd_name" trace2 event.
* [] that the outer process has a single component SID (or depth "d0" in
* the PERF stream).
* [] that "child_start" and "child_exit" events are generated for the child.
* [] if the child process is an instrumented executable:
* [] that "version", "start", ..., "exit", and "atexit" events are
* generated by the child process.
* [] that the child process events have a multiple component SID (or
* depth "dN+1" in the PERF stream).
* [] that the child exit code is propagated to the parent process "exit"
* and "atexit" events..
* [] (optional) that the "t_abs" field in the child process "atexit" event
* is less than the "t_rel" field in the "child_exit" event of the parent
* process.
* [] if the child process is like the alias example above,
* [] (optional) the child process attempts to run "git-xyx" as a dashed
* command.
* [] the child process emits an "alias" event with "xyz" => "version"
* [] the child process runs "git version" as a child process.
* [] the child process has a 3 component SID (or depth "d2" in the PERF
* stream).
*/
static int ut_004child(int argc, const char **argv)
{
struct child_process cmd = CHILD_PROCESS_INIT;
int result;
/*
* Allow empty <child_command_line> so we can do arbitrarily deep
* command nesting and let the last one be null.
*/
if (!argc)
return 0;
strvec_pushv(&cmd.args, argv);
result = run_command(&cmd);
exit(result);
}
/*
* Exec a git command. This may either create a child process (Windows)
* or replace the existing process.
* test-tool trace2 005exec <git_command_args>
*
* For example:
* test-tool trace2 005exec version
*
* Test harness can confirm (on Windows):
* [] the "name" field in the "cmd_name" trace2 event.
* [] that the outer process has a single component SID (or depth "d0" in
* the PERF stream).
* [] that "exec" and "exec_result" events are generated for the child
* process (since the Windows compatibility layer fakes an exec() with
* a CreateProcess(), WaitForSingleObject(), and exit()).
* [] that the child process has multiple component SID (or depth "dN+1"
* in the PERF stream).
*
* Test harness can confirm (on platforms with a real exec() function):
* [] TODO talk about process replacement and how it affects SID.
*/
static int ut_005exec(int argc, const char **argv)
{
int result;
if (!argc)
return 0;
result = execv_git_cmd(argv);
return result;
}
static int ut_006data(int argc, const char **argv)
{
const char *usage_error =
"expect <cat0> <k0> <v0> [<cat1> <k1> <v1> [...]]";
if (argc % 3 != 0)
die("%s", usage_error);
while (argc) {
if (!argv[0] || !*argv[0] || !argv[1] || !*argv[1] ||
!argv[2] || !*argv[2])
die("%s", usage_error);
trace2_data_string(argv[0], the_repository, argv[1], argv[2]);
argv += 3;
argc -= 3;
}
return 0;
}
static int ut_007BUG(int argc, const char **argv)
{
/*
* Exercise BUG() to ensure that the message is printed to trace2.
*/
BUG("the bug message");
}
static int ut_008bug(int argc UNUSED, const char **argv UNUSED)
{
bug("a bug message");
bug("another bug message");
BUG_if_bug("an explicit BUG_if_bug() following bug() call(s) is nice, but not required");
return 0;
}
static int ut_009bug_BUG(int argc UNUSED, const char **argv UNUSED)
{
bug("a bug message");
bug("another bug message");
/* The BUG_if_bug(...) isn't here, but we'll spot bug() calls on exit()! */
return 0;
}
static int ut_010bug_BUG(int argc UNUSED, const char **argv UNUSED)
{
bug("a %s message", "bug");
BUG("a %s message", "BUG");
}
/*
* Single-threaded timer test. Create several intervals using the
* TEST1 timer. The test script can verify that an aggregate Trace2
* "timer" event is emitted indicating that we started+stopped the
* timer the requested number of times.
*/
static int ut_100timer(int argc, const char **argv)
{
const char *usage_error =
"expect <count> <ms_delay>";
int count = 0;
int delay = 0;
int k;
if (argc != 2)
die("%s", usage_error);
if (get_i(&count, argv[0]))
die("%s", usage_error);
if (get_i(&delay, argv[1]))
die("%s", usage_error);
for (k = 0; k < count; k++) {
trace2_timer_start(TRACE2_TIMER_ID_TEST1);
sleep_millisec(delay);
trace2_timer_stop(TRACE2_TIMER_ID_TEST1);
}
return 0;
}
struct ut_101_data {
int count;
int delay;
};
static void *ut_101timer_thread_proc(void *_ut_101_data)
{
struct ut_101_data *data = _ut_101_data;
int k;
trace2_thread_start("ut_101");
for (k = 0; k < data->count; k++) {
trace2_timer_start(TRACE2_TIMER_ID_TEST2);
sleep_millisec(data->delay);
trace2_timer_stop(TRACE2_TIMER_ID_TEST2);
}
trace2_thread_exit();
return NULL;
}
/*
* Multi-threaded timer test. Create several threads that each create
* several intervals using the TEST2 timer. The test script can verify
* that an individual Trace2 "th_timer" events for each thread and an
* aggregate "timer" event are generated.
*/
static int ut_101timer(int argc, const char **argv)
{
const char *usage_error =
"expect <count> <ms_delay> <threads>";
struct ut_101_data data = { 0, 0 };
int nr_threads = 0;
int k;
pthread_t *pids = NULL;
if (argc != 3)
die("%s", usage_error);
if (get_i(&data.count, argv[0]))
die("%s", usage_error);
if (get_i(&data.delay, argv[1]))
die("%s", usage_error);
if (get_i(&nr_threads, argv[2]))
die("%s", usage_error);
CALLOC_ARRAY(pids, nr_threads);
for (k = 0; k < nr_threads; k++) {
if (pthread_create(&pids[k], NULL, ut_101timer_thread_proc, &data))
die("failed to create thread[%d]", k);
}
for (k = 0; k < nr_threads; k++) {
if (pthread_join(pids[k], NULL))
die("failed to join thread[%d]", k);
}
free(pids);
return 0;
}
/*
* Single-threaded counter test. Add several values to the TEST1 counter.
* The test script can verify that the final sum is reported in the "counter"
* event.
*/
static int ut_200counter(int argc, const char **argv)
{
const char *usage_error =
"expect <v1> [<v2> [...]]";
int value;
int k;
if (argc < 1)
die("%s", usage_error);
for (k = 0; k < argc; k++) {
if (get_i(&value, argv[k]))
die("invalid value[%s] -- %s",
argv[k], usage_error);
trace2_counter_add(TRACE2_COUNTER_ID_TEST1, value);
}
return 0;
}
/*
* Multi-threaded counter test. Create seveal threads that each increment
* the TEST2 global counter. The test script can verify that an individual
* "th_counter" event is generated with a partial sum for each thread and
* that a final aggregate "counter" event is generated.
*/
struct ut_201_data {
int v1;
int v2;
};
static void *ut_201counter_thread_proc(void *_ut_201_data)
{
struct ut_201_data *data = _ut_201_data;
trace2_thread_start("ut_201");
trace2_counter_add(TRACE2_COUNTER_ID_TEST2, data->v1);
trace2_counter_add(TRACE2_COUNTER_ID_TEST2, data->v2);
trace2_thread_exit();
return NULL;
}
static int ut_201counter(int argc, const char **argv)
{
const char *usage_error =
"expect <v1> <v2> <threads>";
struct ut_201_data data = { 0, 0 };
int nr_threads = 0;
int k;
pthread_t *pids = NULL;
if (argc != 3)
die("%s", usage_error);
if (get_i(&data.v1, argv[0]))
die("%s", usage_error);
if (get_i(&data.v2, argv[1]))
die("%s", usage_error);
if (get_i(&nr_threads, argv[2]))
die("%s", usage_error);
CALLOC_ARRAY(pids, nr_threads);
for (k = 0; k < nr_threads; k++) {
if (pthread_create(&pids[k], NULL, ut_201counter_thread_proc, &data))
die("failed to create thread[%d]", k);
}
for (k = 0; k < nr_threads; k++) {
if (pthread_join(pids[k], NULL))
die("failed to join thread[%d]", k);
}
free(pids);
return 0;
}
/*
* Usage:
* test-tool trace2 <ut_name_1> <ut_usage_1>
* test-tool trace2 <ut_name_2> <ut_usage_2>
* ...
*/
#define USAGE_PREFIX "test-tool trace2"
/* clang-format off */
static struct unit_test ut_table[] = {
{ ut_001return, "001return", "<exit_code>" },
{ ut_002exit, "002exit", "<exit_code>" },
{ ut_003error, "003error", "<error_message>+" },
{ ut_004child, "004child", "[<child_command_line>]" },
{ ut_005exec, "005exec", "<git_command_args>" },
{ ut_006data, "006data", "[<category> <key> <value>]+" },
{ ut_007BUG, "007bug", "" },
{ ut_008bug, "008bug", "" },
{ ut_009bug_BUG, "009bug_BUG","" },
{ ut_010bug_BUG, "010bug_BUG","" },
{ ut_100timer, "100timer", "<count> <ms_delay>" },
{ ut_101timer, "101timer", "<count> <ms_delay> <threads>" },
{ ut_200counter, "200counter", "<v1> [<v2> [<v3> [...]]]" },
{ ut_201counter, "201counter", "<v1> <v2> <threads>" },
};
/* clang-format on */
/* clang-format off */
#define for_each_ut(k, ut_k) \
for (k = 0, ut_k = &ut_table[k]; \
k < ARRAY_SIZE(ut_table); \
k++, ut_k = &ut_table[k])
/* clang-format on */
static int print_usage(void)
{
int k;
struct unit_test *ut_k;
fprintf(stderr, "usage:\n");
for_each_ut (k, ut_k)
fprintf(stderr, "\t%s %s %s\n", USAGE_PREFIX, ut_k->ut_name,
ut_k->ut_usage);
return 129;
}
/*
* Issue various trace2 events for testing.
*
* We assume that these trace2 routines has already been called:
* [] trace2_initialize() [common-main.c:main()]
* [] trace2_cmd_start() [common-main.c:main()]
* [] trace2_cmd_name() [test-tool.c:cmd_main()]
* [] tracd2_cmd_list_config() [test-tool.c:cmd_main()]
* So that:
* [] the various trace2 streams are open.
* [] the process SID has been created.
* [] the "version" event has been generated.
* [] the "start" event has been generated.
* [] the "cmd_name" event has been generated.
* [] this writes various "def_param" events for interesting config values.
*
* We return from here and let test-tool.c::cmd_main() pass the exit
* code to common-main.c::main(), which will use it to call
* trace2_cmd_exit().
*/
int cmd__trace2(int argc, const char **argv)
{
int k;
struct unit_test *ut_k;
argc--; /* skip over "trace2" arg */
argv++;
if (argc)
for_each_ut (k, ut_k)
if (!strcmp(argv[0], ut_k->ut_name))
return ut_k->ut_fn(argc - 1, argv + 1);
return print_usage();
}