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profile: Expose the ability to free the kernel profiling buffer.

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This commit is contained in:
Brian Gianforcaro 2021-04-18 21:25:43 -07:00 • committed by Andreas Kling
parent 3e87e43f9d
commit ec3596545a
1 changed files with 13 additions and 4 deletions
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17
Userland/Utilities/profile.cpp
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@ -37,6 +37,7 @@ int main(int argc, char** argv)
const char* pid_argument = nullptr;
const char* cmd_argument = nullptr;
bool wait = false;
bool free = false;
bool enable = false;
bool disable = false;
bool all_processes = false;
@ -45,6 +46,7 @@ int main(int argc, char** argv)
args_parser.add_option(all_processes, "Profile all processes (super-user only)", nullptr, 'a');
args_parser.add_option(enable, "Enable", nullptr, 'e');
args_parser.add_option(disable, "Disable", nullptr, 'd');
args_parser.add_option(free, "Free the profiling buffer for the associated process(es).", nullptr, 'f');
args_parser.add_option(wait, "Enable profiling and wait for user input to disable.", nullptr, 'w');
args_parser.add_option(cmd_argument, "Command", nullptr, 'c', "command");
@ -56,8 +58,8 @@ int main(int argc, char** argv)
}
if (pid_argument || all_processes) {
if (!(enable ^ disable ^ wait)) {
fprintf(stderr, "-p <PID> requires -e xor -d xor -w.\n");
if (!(enable ^ disable ^ wait ^ free)) {
fprintf(stderr, "-p <PID> requires -e xor -d xor -w xor -f.\n");
return 1;
}
@ -78,11 +80,18 @@ int main(int argc, char** argv)
(void)getchar();
}
if (profiling_disable(pid) < 0) {
if (wait || disable) {
if (profiling_disable(pid) < 0) {
perror("profiling_disable");
return 1;
}
outln("Profiling disabled.");
}
if (free && profiling_free_buffer(pid) < 0) {
perror("profiling_disable");
return 1;
}
outln("Profiling disabled.");
return 0;
}