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Diffstat (limited to 'cpp/src/qpid/sys/posix/Fork.cpp')
-rw-r--r--cpp/src/qpid/sys/posix/Fork.cpp23
1 files changed, 9 insertions, 14 deletions
diff --git a/cpp/src/qpid/sys/posix/Fork.cpp b/cpp/src/qpid/sys/posix/Fork.cpp
index 78017a5f91..ec3af620ef 100644
--- a/cpp/src/qpid/sys/posix/Fork.cpp
+++ b/cpp/src/qpid/sys/posix/Fork.cpp
@@ -32,27 +32,22 @@ namespace sys {
using namespace std;
namespace {
-/** Throw an exception containing msg and strerror if condition is true. */
-void throwIf(bool condition, const string& msg) {
- if (condition)
- throw Exception(msg + (errno? ": "+strError(errno) : string()) + ".");
-}
void writeStr(int fd, const std::string& str) {
const char* WRITE_ERR = "Error writing to parent process";
int size = str.size();
- throwIf(int(sizeof(size)) > ::write(fd, &size, sizeof(size)), WRITE_ERR);
- throwIf(size > ::write(fd, str.data(), size), WRITE_ERR);
+ if (int(sizeof(size)) > ::write(fd, &size, sizeof(size))) throw ErrnoException(WRITE_ERR);
+ if (size > ::write(fd, str.data(), size)) throw ErrnoException(WRITE_ERR);
}
string readStr(int fd) {
string value;
const char* READ_ERR = "Error reading from forked process";
int size;
- throwIf(int(sizeof(size)) > ::read(fd, &size, sizeof(size)), READ_ERR);
+ if (int(sizeof(size)) > ::read(fd, &size, sizeof(size))) throw ErrnoException(READ_ERR);
if (size > 0) { // Read string message
value.resize(size);
- throwIf(size > ::read(fd, const_cast<char*>(value.data()), size), READ_ERR);
+ if (size > ::read(fd, const_cast<char*>(value.data()), size)) throw ErrnoException(READ_ERR);
}
return value;
}
@@ -64,7 +59,7 @@ Fork::~Fork() {}
void Fork::fork() {
pid_t pid = ::fork();
- throwIf(pid < 0, "Failed to fork the process");
+ if (pid < 0) throw ErrnoException("Failed to fork the process");
if (pid == 0) child();
else parent(pid);
}
@@ -80,9 +75,9 @@ struct AutoCloseFd {
};
void ForkWithMessage::fork() {
- throwIf(::pipe(pipeFds) < 0, "Can't create pipe");
+ if(::pipe(pipeFds) < 0) throw ErrnoException("Can't create pipe");
pid_t pid = ::fork();
- throwIf(pid < 0, "Fork fork failed");
+ if(pid < 0) throw ErrnoException("Fork fork failed");
if (pid == 0) { // Child
AutoCloseFd ac(pipeFds[1]); // Write side.
::close(pipeFds[0]); // Read side
@@ -113,8 +108,8 @@ string ForkWithMessage::wait(int timeout) { // parent waits for child.
FD_ZERO(&fds);
FD_SET(pipeFds[0], &fds);
int n=select(FD_SETSIZE, &fds, 0, 0, &tv);
- throwIf(n==0, "Timed out waiting for fork");
- throwIf(n<0, "Error waiting for fork");
+ if(n<0) throw ErrnoException("Error waiting for fork");
+ if (n==0) throw Exception("Timed out waiting for fork");
string error = readStr(pipeFds[0]);
if (error.empty()) return readStr(pipeFds[0]);