#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
+#if HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <fcntl.h>
#endif
-extern char** environ;
-
namespace llvm {
using namespace sys;
return Path();
}
-static void RedirectFD(const std::string &File, int FD) {
- if (File.empty()) return; // Noop
+static bool RedirectFD(const std::string &File, int FD, std::string* ErrMsg) {
+ if (File.empty()) return false; // Noop
// Open the file
int InFD = open(File.c_str(), FD == 0 ? O_RDONLY : O_WRONLY|O_CREAT, 0666);
if (InFD == -1) {
- ThrowErrno("Cannot open file '" + File + "' for "
+ MakeErrMsg(ErrMsg, "Cannot open file '" + File + "' for "
+ (FD == 0 ? "input" : "output") + "!\n");
+ return true;
}
- dup2(InFD, FD); // Install it as the requested FD
+ // Install it as the requested FD
+ if (-1 == dup2(InFD, FD)) {
+ MakeErrMsg(ErrMsg, "Cannot dup2");
+ return true;
+ }
close(InFD); // Close the original FD
+ return false;
}
static bool Timeout = false;
Timeout = true;
}
+static void SetMemoryLimits (unsigned size)
+{
+#if HAVE_SYS_RESOURCE_H
+ struct rlimit r;
+ __typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur)) (size) * 1048576;
+
+ // Heap size
+ getrlimit (RLIMIT_DATA, &r);
+ r.rlim_cur = limit;
+ setrlimit (RLIMIT_DATA, &r);
+ // Resident set size.
+ getrlimit (RLIMIT_RSS, &r);
+ r.rlim_cur = limit;
+ setrlimit (RLIMIT_RSS, &r);
+ // Virtual memory.
+ getrlimit (RLIMIT_AS, &r);
+ r.rlim_cur = limit;
+ setrlimit (RLIMIT_AS, &r);
+#endif
+}
+
int
Program::ExecuteAndWait(const Path& path,
const char** args,
const char** envp,
const Path** redirects,
- unsigned secondsToWait
-) {
- if (!path.canExecute())
- throw path.toString() + " is not executable";
+ unsigned secondsToWait,
+ unsigned memoryLimit,
+ std::string* ErrMsg)
+{
+ if (!path.canExecute()) {
+ if (ErrMsg)
+ *ErrMsg = path.toString() + " is not executable";
+ return -1;
+ }
#ifdef HAVE_SYS_WAIT_H
// Create a child process.
switch (child) {
// An error occured: Return to the caller.
case -1:
- ThrowErrno(std::string("Couldn't execute program '") + path.toString() +
- "'");
- break;
+ MakeErrMsg(ErrMsg, "Couldn't fork");
+ return -1;
// Child process: Execute the program.
case 0: {
// Redirect file descriptors...
if (redirects) {
- if (redirects[0])
- if (redirects[0]->isEmpty())
- RedirectFD("/dev/null",0);
- else
- RedirectFD(redirects[0]->toString(), 0);
- if (redirects[1])
- if (redirects[1]->isEmpty())
- RedirectFD("/dev/null",1);
- else
- RedirectFD(redirects[1]->toString(), 1);
+ if (redirects[0]) {
+ if (redirects[0]->isEmpty()) {
+ if (RedirectFD("/dev/null",0,ErrMsg)) { return -1; }
+ } else {
+ if (RedirectFD(redirects[0]->toString(), 0,ErrMsg)) { return -1; }
+ }
+ }
+ if (redirects[1]) {
+ if (redirects[1]->isEmpty()) {
+ if (RedirectFD("/dev/null",1,ErrMsg)) { return -1; }
+ } else {
+ if (RedirectFD(redirects[1]->toString(),1,ErrMsg)) { return -1; }
+ }
+ }
if (redirects[1] && redirects[2] &&
*(redirects[1]) != *(redirects[2])) {
- if (redirects[2]->isEmpty())
- RedirectFD("/dev/null",2);
- else
- RedirectFD(redirects[2]->toString(), 2);
- } else {
- dup2(1, 2);
+ if (redirects[2]->isEmpty()) {
+ if (RedirectFD("/dev/null",2,ErrMsg)) { return -1; }
+ } else {
+ if (RedirectFD(redirects[2]->toString(), 2,ErrMsg)) { return -1; }
+ }
+ } else if (-1 == dup2(1,2)) {
+ MakeErrMsg(ErrMsg, "Can't redirect");
+ return -1;
}
}
- // Set up the environment
- char** env = environ;
- if (envp != 0)
- env = (char**) envp;
-
+ // Set memory limits
+ if (memoryLimit!=0) {
+ SetMemoryLimits(memoryLimit);
+ }
+
// Execute!
- execve (path.c_str(), (char** const)args, env);
+ if (envp != 0)
+ execve (path.c_str(), (char** const)args, (char**)envp);
+ else
+ execv (path.c_str(), (char** const)args);
// If the execve() failed, we should exit and let the parent pick up
// our non-zero exit status.
exit (errno);
// Wait for child to die
if (wait(&status) != child)
- ThrowErrno("Child timedout but wouldn't die");
+ MakeErrMsg(ErrMsg, "Child timed out but wouldn't die");
return -1; // Timeout detected
} else {
- ThrowErrno("Error waiting for child process");
+ MakeErrMsg(ErrMsg, "Error waiting for child process");
+ return -1;
}
// We exited normally without timeout, so turn off the timer.
// Return the proper exit status. 0=success, >0 is programs' exit status,
// <0 means a signal was returned, -9999999 means the program dumped core.
int result = 0;
- if (WIFEXITED (status))
+ if (WIFEXITED(status))
result = WEXITSTATUS(status);
else if (WIFSIGNALED(status))
result = 0 - WTERMSIG(status);
#ifdef WCOREDUMP
- if (WCOREDUMP(status))
+ else if (WCOREDUMP(status))
result |= 0x01000000;
#endif
return result;
}
+bool Program::ChangeStdinToBinary(){
+ // Do nothing, as Unix doesn't differentiate between text and binary.
+ return false;
+}
+
+bool Program::ChangeStdoutToBinary(){
+ // Do nothing, as Unix doesn't differentiate between text and binary.
+ return false;
+}
+
}