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profile: Prevent crash when -p is supplied a non-integer value

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Instead of crashing we give a helpful warning message to the user.

This also removes a fixme! :^)
This commit is contained in:
PrestonLTaylor 2023-05-02 22:26:16 +01:00 committed by Andreas Kling
parent 6811ab9c3b
commit 5563ebab5a
Notes: sideshowbarker 2024-07-17 11:33:34 +09:00 
Author: https://github.com/PrestonLTaylor
Commit: https://github.com/SerenityOS/serenity/commit/5563ebab5a
Pull-request: https://github.com/SerenityOS/serenity/pull/18616
1 changed files with 18 additions and 2 deletions
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20
Userland/Utilities/profile.cpp
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@ -11,6 +11,8 @@
#include <stdio.h>
#include <stdlib.h>
static Optional<pid_t> determine_pid_to_profile(StringView pid_argument, bool all_processes);
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
Core::ArgsParser args_parser;
@ -86,9 +88,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
return 1;
}
// FIXME: Handle error case.
pid_t pid = all_processes ? -1 : pid_argument.to_int().release_value();
auto pid_opt = determine_pid_to_profile(pid_argument, all_processes);
if (!pid_opt.has_value()) {
warnln("-p <PID> requires an integer value.");
return 1;
}
pid_t pid = pid_opt.value();
if (wait || enable) {
TRY(Core::System::profiling_enable(pid, event_mask));
@ -116,3 +122,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
return 0;
}
static Optional<pid_t> determine_pid_to_profile(StringView pid_argument, bool all_processes)
{
if (all_processes) {
return { -1 };
}
// pid_argument is guaranteed to have a value
return pid_argument.to_int();
}