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Add a logging facility.

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This sets up a hierarchical logging facility, so that we can add logging
statements liberally, and turn them on in a fine-grained manner.
This commit is contained in:
David T. Goldblatt
2017-07-19 16:36:46 -07:00
committed by David Goldblatt
parent 0975b88dfd
commit 9761b449c8
8 changed files with 396 additions and 0 deletions
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182
test/unit/log.c Normal file
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#include "test/jemalloc_test.h"
#include "jemalloc/internal/log.h"
static void
expect_no_logging(const char *names) {
log_var_t log_l1 = LOG_VAR_INIT("l1");
log_var_t log_l2 = LOG_VAR_INIT("l2");
log_var_t log_l2_a = LOG_VAR_INIT("l2.a");
strcpy(log_var_names, names);
int count = 0;
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1)
count++;
log_do_end(log_l1)
log_do_begin(log_l2)
count++;
log_do_end(log_l2)
log_do_begin(log_l2_a)
count++;
log_do_end(log_l2_a)
}
assert_d_eq(count, 0, "Disabled logging not ignored!");
}
TEST_BEGIN(test_log_disabled) {
test_skip_if(!config_log);
atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
expect_no_logging("");
expect_no_logging("abc");
expect_no_logging("a.b.c");
expect_no_logging("l12");
expect_no_logging("l123|a456|b789");
expect_no_logging("|||");
}
TEST_END
TEST_BEGIN(test_log_enabled_direct) {
test_skip_if(!config_log);
atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
log_var_t log_l1 = LOG_VAR_INIT("l1");
log_var_t log_l1_a = LOG_VAR_INIT("l1.a");
log_var_t log_l2 = LOG_VAR_INIT("l2");
int count;
count = 0;
strcpy(log_var_names, "l1");
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1)
count++;
log_do_end(log_l1)
}
assert_d_eq(count, 10, "Mis-logged!");
count = 0;
strcpy(log_var_names, "l1.a");
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1_a)
count++;
log_do_end(log_l1_a)
}
assert_d_eq(count, 10, "Mis-logged!");
count = 0;
strcpy(log_var_names, "l1.a|abc|l2|def");
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1_a)
count++;
log_do_end(log_l1_a)
log_do_begin(log_l2)
count++;
log_do_end(log_l2)
}
assert_d_eq(count, 20, "Mis-logged!");
}
TEST_END
TEST_BEGIN(test_log_enabled_indirect) {
test_skip_if(!config_log);
atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
strcpy(log_var_names, "l0|l1|abc|l2.b|def");
/* On. */
log_var_t log_l1 = LOG_VAR_INIT("l1");
/* Off. */
log_var_t log_l1a = LOG_VAR_INIT("l1a");
/* On. */
log_var_t log_l1_a = LOG_VAR_INIT("l1.a");
/* Off. */
log_var_t log_l2_a = LOG_VAR_INIT("l2.a");
/* On. */
log_var_t log_l2_b_a = LOG_VAR_INIT("l2.b.a");
/* On. */
log_var_t log_l2_b_b = LOG_VAR_INIT("l2.b.b");
/* 4 are on total, so should sum to 40. */
int count = 0;
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1)
count++;
log_do_end(log_l1)
log_do_begin(log_l1a)
count++;
log_do_end(log_l1a)
log_do_begin(log_l1_a)
count++;
log_do_end(log_l1_a)
log_do_begin(log_l2_a)
count++;
log_do_end(log_l2_a)
log_do_begin(log_l2_b_a)
count++;
log_do_end(log_l2_b_a)
log_do_begin(log_l2_b_b)
count++;
log_do_end(log_l2_b_b)
}
assert_d_eq(count, 40, "Mis-logged!");
}
TEST_END
TEST_BEGIN(test_log_enabled_global) {
test_skip_if(!config_log);
atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
strcpy(log_var_names, "abc|.|def");
log_var_t log_l1 = LOG_VAR_INIT("l1");
log_var_t log_l2_a_a = LOG_VAR_INIT("l2.a.a");
int count = 0;
for (int i = 0; i < 10; i++) {
log_do_begin(log_l1)
count++;
log_do_end(log_l1)
log_do_begin(log_l2_a_a)
count++;
log_do_end(log_l2_a_a)
}
assert_d_eq(count, 20, "Mis-logged!");
}
TEST_END
TEST_BEGIN(test_logs_if_no_init) {
test_skip_if(!config_log);
atomic_store_b(&log_init_done, false, ATOMIC_RELAXED);
log_var_t l = LOG_VAR_INIT("definitely.not.enabled");
int count = 0;
for (int i = 0; i < 10; i++) {
log_do_begin(l)
count++;
log_do_end(l)
}
assert_d_eq(count, 0, "Logging shouldn't happen if not initialized.");
}
TEST_END
int
main(void) {
return test(
test_log_disabled,
test_log_enabled_direct,
test_log_enabled_indirect,
test_log_enabled_global,
test_logs_if_no_init);
}