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Code Issues Releases Activity

Fix launchGDBServer() compile and make more signal safe

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This commit is contained in:
Mathias Stearn 2015-03-06 15:22:24 -05:00
parent 055d827ed7
commit f6656c88c4
1 changed files with 17 additions and 11 deletions
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28
src/mongo/util/debugger.cpp
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@ -31,8 +31,6 @@
#include "mongo/util/debugger.h"
#include <iostream>
#include "mongo/db/server_options.h"
#include "mongo/util/debug_util.h"
@ -40,10 +38,6 @@
#include <signal.h>
#endif
#if defined(USE_GDBSERVER)
#include "mongo/db/jsobj.h"
#endif // defined(USE_GDBSERVER)
namespace mongo {
void breakpoint() {
#ifdef _WIN32
@ -77,15 +71,27 @@ namespace mongo {
// Don't come back here
signal(SIGTRAP, SIG_IGN);
int newPort = serverGlobalParams.port + 2000;
string newPortStr = "localhost:" + BSONObjBuilder::numStr(newPort);
string pidToDebug = BSONObjBuilder::numStr(getpid());
const int newPort = serverGlobalParams.port + 2000;
char pidToDebug[16];
int pidRet = snprintf(pidToDebug, sizeof(pidToDebug), "%d", getpid());
invariant(pidRet >= 0 && size_t(pidRet) < sizeof(pidToDebug));
char hostPort[32];
int hostRet = snprintf(hostPort, sizeof(hostPort), "localhost:%d", newPort);
invariant(hostRet >= 0 && size_t(hostRet) < sizeof(hostPort));
char msg[128];
int msgRet = snprintf(msg, sizeof(msg),
"\n\n\t**** Launching gdbserver on %s ****\n\n", hostPort);
invariant(msgRet >= 0 && size_t(msgRet) < sizeof(msg));
invariant(write(STDERR_FILENO, msg, msgRet) == msgRet);
cout << "\n\n\t**** Launching gdbserver on " << newPortStr << " ****" << endl << endl;
if (fork() == 0) {
//child
execlp("gdbserver", "gdbserver", "--attach", newPortStr.c_str(), pidToDebug.c_str(), NULL);
execlp("gdbserver", "gdbserver", "--attach", hostPort, pidToDebug, NULL);
perror(NULL);
_exit(1);
}
else {
//parent