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Userspace: Shell imporove 'time' command

This commit is contained in:
Bananymous 2023-07-06 09:14:14 +03:00
parent 7f8b7b811e
commit 79450df04c
1 changed files with 29 additions and 31 deletions
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60
userspace/Shell/main.cpp
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@ -144,9 +144,8 @@ BAN::Vector<BAN::String> parse_command(BAN::StringView command)
return result;
}
int execute_command(BAN::StringView command)
int execute_command(BAN::Vector<BAN::String>& args)
{
auto args = parse_command(command);
if (args.empty())
return 0;
@ -202,25 +201,39 @@ int execute_command(BAN::StringView command)
if (chdir(path.data()) == -1)
ERROR_RETURN("chdir");
}
else if (args.front() == "time"sv)
{
args.remove(0);
timespec start, end;
if (clock_gettime(CLOCK_MONOTONIC, &start) == -1)
ERROR_RETURN("clock_gettime");
int ret = execute_command(args);
if (clock_gettime(CLOCK_MONOTONIC, &end) == -1)
ERROR_RETURN("clock_gettime");
uint64_t total_ns = 0;
total_ns += (end.tv_sec - start.tv_sec) * 1'000'000'000;
total_ns += end.tv_nsec - start.tv_nsec;
int secs = total_ns / 1'000'000'000;
int msecs = (total_ns % 1'000'000'000) / 1'000'000;
printf("took %d.%03d s\n", secs, msecs);
return ret;
}
else
{
bool time = false;
if (args.front() == "time"sv)
{
args.remove(0);
time = true;
}
BAN::Vector<char*> cmd_args;
MUST(cmd_args.reserve(args.size() + 1));
for (const auto& arg : args)
MUST(cmd_args.push_back((char*)arg.data()));
MUST(cmd_args.push_back(nullptr));
timespec start;
if (time && clock_gettime(CLOCK_MONOTONIC, &start) == -1)
ERROR_RETURN("clock_gettime");
pid_t pid = fork();
if (pid == 0)
{
@ -230,27 +243,11 @@ int execute_command(BAN::StringView command)
}
if (pid == -1)
ERROR_RETURN("fork");
int status;
if (waitpid(pid, &status, 0) == -1)
ERROR_RETURN("waitpid");
if (time)
{
timespec end;
if (clock_gettime(CLOCK_MONOTONIC, &end) == -1)
ERROR_RETURN("clock_gettime");
uint64_t total_ns = 0;
total_ns += (end.tv_sec - start.tv_sec) * 1'000'000'000;
total_ns += end.tv_nsec - start.tv_nsec;
printf(
"took %d.%03d s\n",
(int)( total_ns / 1'000'000'000),
(int)((total_ns % 1'000'000'000) / 1'000'000)
);
}
return status;
}
@ -448,7 +445,8 @@ int main(int argc, char** argv)
if (!buffers[index].empty())
{
tcsetattr(0, TCSANOW, &old_termios);
execute_command(buffers[index]);
auto parsed_arguments = parse_command(buffers[index]);
execute_command(parsed_arguments);
tcsetattr(0, TCSANOW, &new_termios);
MUST(history.push_back(buffers[index]));
buffers = history;