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Code Issues 1 Releases Wiki Activity

Add os module documentation. Fix some fiber documentation.

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This commit is contained in:
Calvin Rose
2018-11-16 02:34:50 -05:00
parent 945b72468c
commit b20cbdfde6
2 changed files with 56 additions and 28 deletions
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4
src/core/fiber.c
View File

@@ -481,7 +481,7 @@ static const JanetReg cfuns[] = {
"\t:pending - the fiber has been yielded\n"
"\t:user(0-9) - the fiber is suspended by a user signal\n"
"\t:alive - the fiber is currently running and cannot be resumed\n"
"\t:new - the fiber has just been created and not yet run\n"
"\t:new - the fiber has just been created and not yet run"
},
{"fiber.stack", cfun_stack,
"(fiber.stack fib)\n\n"
@@ -496,7 +496,7 @@ static const JanetReg cfuns[] = {
"\t:name - the human friendly name of the function\n"
"\t:pc - integer indicating the location of the program counter\n"
"\t:source - string with filename or other identifier for the source code\n"
"\t:tail - boolean indicating a tail call\n"
"\t:tail - boolean indicating a tail call"
},
{"fiber.current", cfun_current,
"(fiber.current)\n\n"

80
src/core/os.c
View File

@@ -129,27 +129,16 @@ static int os_execute(JanetArgs args) {
argv[args.n] = NULL;
/* Fork child process */
pid_t pid;
if (0 == (pid = fork())) {
pid_t pid = fork();
if (pid < 0) {
JANET_THROW(args, "failed to execute");
} else if (pid == 0) {
if (-1 == execve((const char *)argv[0], (char **)argv, NULL)) {
exit(1);
}
}
/* Wait for child process */
int status;
struct timespec waiter;
waiter.tv_sec = 0;
waiter.tv_nsec = 200;
while (0 == waitpid(pid, &status, WNOHANG)) {
waiter.tv_nsec = (waiter.tv_nsec * 3) / 2;
/* Keep increasing sleep time by a factor of 3/2
* until a maximum */
if (waiter.tv_nsec > 4999999)
waiter.tv_nsec = 5000000;
nanosleep(&waiter, NULL);
}
waitpid(pid, &status, 0);
JANET_RETURN_INTEGER(args, status);
}
#endif
@@ -294,16 +283,55 @@ static int os_cwd(JanetArgs args) {
}
static const JanetReg cfuns[] = {
{"os.which", os_which, NULL},
{"os.execute", os_execute, NULL},
{"os.shell", os_shell, NULL},
{"os.exit", os_exit, NULL},
{"os.getenv", os_getenv, NULL},
{"os.setenv", os_setenv, NULL},
{"os.time", os_time, NULL},
{"os.clock", os_clock, NULL},
{"os.sleep", os_sleep, NULL},
{"os.cwd", os_cwd, NULL},
{"os.which", os_which,
"(os.which)\n\n"
"Check the current operating system. Returns one of:\n\n"
"\t:windows - Microsoft Windows\n"
"\t:macos - Apple macos\n"
"\t:posix - A POSIX compatible system (default)"
},
{"os.execute", os_execute,
"(os.execute program & args)\n\n"
"Execute a program on the system and pass it string arguments. Returns "
"the exit status of the program."
},
{"os.shell", os_shell,
"(os.shell str)\n\n"
"Pass a command string str directly to the system shell."
},
{"os.exit", os_exit,
"(os.exit x)\n\n"
"Exit from janet with an exit code equal to x. If x is not an integer, "
"the exit with status equal the hash of x."
},
{"os.getenv", os_getenv,
"(os.getenv variable)\n\n"
"Get the string value of an environment variable."
},
{"os.setenv", os_setenv,
"(os.setenv variable value)\n\n"
"Set an environment variable."
},
{"os.time", os_time,
"(os.time)\n\n"
"Get the current time expressed as the number of seconds since "
"January 1, 1970, the Unix epoch. Returns a real number."
},
{"os.clock", os_clock,
"(os.clock)\n\n"
"Return the number of seconds since some fixed point in time. The clock "
"is guaranteed to be non decreased in real time."
},
{"os.sleep", os_sleep,
"(os.sleep nsec)\n\n"
"Suspend the program for nsec seconds. 'nsec' can be a real number. Returns "
"nil."
},
{"os.cwd", os_cwd,
"(os.cwd)\n\n"
"Returns the current working directory."
},
{NULL, NULL, NULL}
};