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52560ba105
on darwin systems and re-execing itself, to creating two separate test programs; lldb runs the first program and it exec's the second. Support for compiling for i386 is going away. llvm-svn: 334783
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
#include <errno.h>
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#include <mach/mach.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <spawn.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <string>
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static void
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exit_with_errno (int err, const char *prefix)
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{
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if (err)
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{
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fprintf (stderr,
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"%s%s",
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prefix ? prefix : "",
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strerror(err));
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exit (err);
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}
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}
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static pid_t
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spawn_process (const char *progname,
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const char **argv,
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const char **envp,
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int &err)
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{
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pid_t pid = 0;
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const posix_spawn_file_actions_t *file_actions = NULL;
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posix_spawnattr_t attr;
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err = posix_spawnattr_init (&attr);
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if (err)
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return pid;
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short flags = POSIX_SPAWN_SETEXEC | POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
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err = posix_spawnattr_setflags (&attr, flags);
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if (err == 0)
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{
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// Use the default signal masks
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sigset_t no_signals;
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sigset_t all_signals;
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sigemptyset (&no_signals);
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sigfillset (&all_signals);
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posix_spawnattr_setsigmask(&attr, &no_signals);
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posix_spawnattr_setsigdefault(&attr, &all_signals);
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err = posix_spawn (&pid,
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progname,
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file_actions,
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&attr,
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(char * const *)argv,
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(char * const *)envp);
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posix_spawnattr_destroy(&attr);
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}
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return pid;
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}
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int
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main (int argc, char const **argv)
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{
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char *buf = (char*) malloc (strlen (argv[0]) + 12);
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strlcpy (buf, argv[0], strlen (argv[0]) + 1);
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std::string directory_name (::dirname (buf));
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std::string other_program = directory_name + "/secondprog";
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int err = 0; // Set breakpoint 1 here
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spawn_process (other_program.c_str(), argv, NULL, err);
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if (err)
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exit_with_errno (err, "posix_spawn x86_64 error");
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return 0;
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}
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