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change macOS < 10.12 clock to SYSTEM_CLOCK, fixes #2537 (#2538)

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* change macOS < 10.12 clock to SYSTEM_CLOCK, fixes #2537

* remove clock_id option from alt_clock_gettime since we always want a monotonic clock.

* update header definition for alt_clock_gettime

* pass clock definition down to host_get_clock_service for macOS < 10.12

* change to monotonic clocks
This commit is contained in:
Asmod4n 2017-04-20 00:13:06 +02:00 committed by Luca Boccassi
parent 45f4a40026
commit ce602d08db
2 changed files with 56 additions and 62 deletions
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14
src/clock.cpp
View File

@ -60,15 +60,9 @@
int alt_clock_gettime (int clock_id, timespec *ts)
{
// The clock_id specified is not supported on this system.
if (clock_id != CLOCK_REALTIME) {
errno = EINVAL;
return -1;
}
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service (mach_host_self (), CALENDAR_CLOCK, &cclock);
host_get_clock_service (mach_host_self (), clock_id, &cclock);
clock_get_time (cclock, &mts);
mach_port_deallocate (mach_task_self (), cclock);
ts->tv_sec = mts.tv_sec;
@ -162,8 +156,8 @@ uint64_t zmq::clock_t::now_us ()
// Use POSIX clock_gettime function to get precise monotonic time.
struct timespec tv;
#if defined ZMQ_HAVE_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 // less than macOS 10.12
int rc = alt_clock_gettime (CLOCK_MONOTONIC, &tv);
#if defined ZMQ_HAVE_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 // less than macOS 10.12
int rc = alt_clock_gettime (SYSTEM_CLOCK, &tv);
#else
int rc = clock_gettime (CLOCK_MONOTONIC, &tv);
#endif
@ -250,7 +244,7 @@ uint64_t zmq::clock_t::rdtsc ()
#else
struct timespec ts;
#if defined ZMQ_HAVE_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 // less than macOS 10.12
alt_clock_gettime (CLOCK_MONOTONIC, &ts);
alt_clock_gettime (SYSTEM_CLOCK, &ts);
#else
clock_gettime (CLOCK_MONOTONIC, &ts);
#endif

104
src/condition_variable.hpp
View File

@ -81,15 +81,15 @@ namespace zmq
#else
#ifdef ZMQ_HAVE_WINDOWS_TARGET_XP
#include <condition_variable>
#include <mutex>
#endif
#ifdef ZMQ_HAVE_WINDOWS_TARGET_XP
#include <condition_variable>
#include <mutex>
#endif
namespace zmq
{
#ifndef ZMQ_HAVE_WINDOWS_TARGET_XP
#ifndef ZMQ_HAVE_WINDOWS_TARGET_XP
class condition_variable_t
{
public:
@ -133,51 +133,51 @@ namespace zmq
void operator = (const condition_variable_t&);
};
#else
class condition_variable_t
{
public:
inline condition_variable_t()
{
}
inline ~condition_variable_t()
{
}
inline int wait(mutex_t* mutex_, int timeout_)
{
std::unique_lock<std::mutex> lck(mtx); // lock mtx
mutex_->unlock(); // unlock mutex_
int res = 0;
if(timeout_ == -1) {
cv.wait(lck); // unlock mtx and wait cv.notify_all(), lock mtx after cv.notify_all()
} else if (cv.wait_for(lck, std::chrono::milliseconds(timeout_)) == std::cv_status::timeout) {
// time expired
errno = EAGAIN;
res = -1;
}
lck.unlock(); // unlock mtx
mutex_->lock(); // lock mutex_
return res;
}
inline void broadcast()
{
std::unique_lock<std::mutex> lck(mtx); // lock mtx
cv.notify_all();
}
private:
std::condition_variable cv;
std::mutex mtx;
// Disable copy construction and assignment.
condition_variable_t(const condition_variable_t&);
void operator = (const condition_variable_t&);
};
class condition_variable_t
{
public:
inline condition_variable_t()
{
}
inline ~condition_variable_t()
{
}
inline int wait(mutex_t* mutex_, int timeout_)
{
std::unique_lock<std::mutex> lck(mtx); // lock mtx
mutex_->unlock(); // unlock mutex_
int res = 0;
if(timeout_ == -1) {
cv.wait(lck); // unlock mtx and wait cv.notify_all(), lock mtx after cv.notify_all()
} else if (cv.wait_for(lck, std::chrono::milliseconds(timeout_)) == std::cv_status::timeout) {
// time expired
errno = EAGAIN;
res = -1;
}
lck.unlock(); // unlock mtx
mutex_->lock(); // lock mutex_
return res;
}
inline void broadcast()
{
std::unique_lock<std::mutex> lck(mtx); // lock mtx
cv.notify_all();
}
private:
std::condition_variable cv;
std::mutex mtx;
// Disable copy construction and assignment.
condition_variable_t(const condition_variable_t&);
void operator = (const condition_variable_t&);
};
#endif
}
@ -214,9 +214,9 @@ namespace zmq
struct timespec timeout;
#if defined ZMQ_HAVE_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 // less than macOS 10.12
alt_clock_gettime(CLOCK_REALTIME, &timeout);
alt_clock_gettime(SYSTEM_CLOCK, &timeout);
#else
clock_gettime(CLOCK_REALTIME, &timeout);
clock_gettime(CLOCK_MONOTONIC, &timeout);
#endif
timeout.tv_sec += timeout_ / 1000;