move portability classes to compat library

8 files changed, 281 insertions, 0 deletions

diff --git a/opentrack-compat/export.hpp b/opentrack-compat/export.hpp
new file mode 100644
index 00000000..f0983b75
--- /dev/null
+++ b/opentrack-compat/export.hpp
@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef _WIN32
+#   define OPENTRACK_LINKAGE __declspec(dllexport)
+#else
+#   define OPENTRACK_LINKAGE
+#endif
+
+#ifndef _MSC_VER
+#	define OPENTRACK_EXPORT __attribute__ ((visibility ("default"))) OPENTRACK_LINKAGE
+#else
+#	define OPENTRACK_EXPORT OPENTRACK_LINKAGE
+#endif
\ No newline at end of file
diff --git a/opentrack-compat/mingw-version-script.txt b/opentrack-compat/mingw-version-script.txt
new file mode 100644
index 00000000..fe20ad37
--- /dev/null
+++ b/opentrack-compat/mingw-version-script.txt
@@ -0,0 +1,8 @@
+{
+ global:
+	GetDialog?0;
+	GetConstructor?0;
+	GetMetadata?0;
+ local:
+   *;
+};
diff --git a/opentrack-compat/posix-version-script.txt b/opentrack-compat/posix-version-script.txt
new file mode 100644
index 00000000..97edb9aa
--- /dev/null
+++ b/opentrack-compat/posix-version-script.txt
@@ -0,0 +1,8 @@
+{
+ global:
+	GetDialog;
+	GetConstructor;
+	GetMetadata;
+ local:
+   *;
+};
\ No newline at end of file
diff --git a/opentrack-compat/qcopyable-mutex.hpp b/opentrack-compat/qcopyable-mutex.hpp
new file mode 100644
index 00000000..f7f36f93
--- /dev/null
+++ b/opentrack-compat/qcopyable-mutex.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <QMutex>
+
+class MyMutex {
+private:
+    QMutex inner;
+
+public:
+    QMutex* operator->() { return &inner; }
+    QMutex* operator->() const { return &const_cast<MyMutex*>(this)->inner; }
+
+    MyMutex operator=(const MyMutex& datum)
+    {
+        auto mode =
+                datum->isRecursive()
+                ? QMutex::Recursive
+                : QMutex::NonRecursive;
+
+        return MyMutex(mode);
+    }
+
+    MyMutex(const MyMutex& datum)
+    {
+        *this = datum;
+    }
+
+    MyMutex(QMutex::RecursionMode mode = QMutex::NonRecursive) :
+        inner(mode)
+    {
+    }
+
+    QMutex* operator&()
+    {
+        return &inner;
+    }
+};
diff --git a/opentrack-compat/shm.cpp b/opentrack-compat/shm.cpp
new file mode 100644
index 00000000..b18a9933
--- /dev/null
+++ b/opentrack-compat/shm.cpp
@@ -0,0 +1,81 @@
+/* Copyright (c) 2013 Stanisław Halik <sthalik@misaki.pl>
+
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+
+#include <cstring>
+#include "shm.h"
+
+#if defined(_WIN32)
+PortableLockedShm::PortableLockedShm(const char* shmName, const char* mutexName, int mapSize)
+{
+    hMutex = CreateMutexA(NULL, false, mutexName);
+    hMapFile = CreateFileMappingA(
+                 INVALID_HANDLE_VALUE,
+                 NULL,
+                 PAGE_READWRITE,
+                 0,
+                 mapSize,
+                 shmName);
+    mem = MapViewOfFile(hMapFile,
+                        FILE_MAP_WRITE,
+                        0,
+                        0,
+                        mapSize);
+}
+
+PortableLockedShm::~PortableLockedShm()
+{
+    UnmapViewOfFile(mem);
+    CloseHandle(hMapFile);
+    CloseHandle(hMutex);
+}
+
+void PortableLockedShm::lock()
+{
+    (void) WaitForSingleObject(hMutex, INFINITE);
+}
+
+void PortableLockedShm::unlock()
+{
+    (void) ReleaseMutex(hMutex);
+}
+#else
+#pragma GCC diagnostic ignored "-Wunused-result"
+PortableLockedShm::PortableLockedShm(const char *shmName, const char* /*mutexName*/, int mapSize) : size(mapSize)
+{
+    char filename[512] = {0};
+    strcpy(filename, "/");
+    strcat(filename, shmName);
+    fd = shm_open(filename, O_RDWR | O_CREAT, 0600);
+    (void) ftruncate(fd, mapSize);
+    mem = mmap(NULL, mapSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, (off_t)0);
+}
+
+PortableLockedShm::~PortableLockedShm()
+{
+    (void) munmap(mem, size);
+    (void) close(fd);
+}
+
+void PortableLockedShm::lock()
+{
+    flock(fd, LOCK_EX);
+}
+
+void PortableLockedShm::unlock()
+{
+    flock(fd, LOCK_UN);
+}
+#endif
+
+bool PortableLockedShm::success()
+{
+#ifndef _WIN32
+    return (void*) mem != (void*) -1;
+#else
+    return (void*) mem != NULL;
+#endif
+}
diff --git a/opentrack-compat/shm.h b/opentrack-compat/shm.h
new file mode 100644
index 00000000..17a0d843
--- /dev/null
+++ b/opentrack-compat/shm.h
@@ -0,0 +1,37 @@
+/* Copyright (c) 2013 Stanisław Halik <sthalik@misaki.pl>
+
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+#pragma once
+
+#if defined(_WIN32)
+#include <windows.h>
+#else
+#include <stdio.h>
+#include <string.h>
+#include <sys/file.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
+#include <sys/types.h>
+#endif
+
+class PortableLockedShm {
+public:
+    PortableLockedShm(const char *shmName, const char *mutexName, int mapSize);
+    ~PortableLockedShm();
+    void lock();
+    void unlock();
+    bool success();
+    inline void* ptr() { return mem; }
+private:
+    void* mem;
+#if defined(_WIN32)
+    HANDLE hMutex, hMapFile;
+#else
+    int fd, size;
+#endif
+};
diff --git a/opentrack-compat/sleep.hpp b/opentrack-compat/sleep.hpp
new file mode 100644
index 00000000..27920842
--- /dev/null
+++ b/opentrack-compat/sleep.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+namespace portable
+{
+#ifdef _WIN32
+    #include <windows.h>
+
+    template<typename = void>
+    void sleep(unsigned milliseconds)
+    {
+        Sleep(milliseconds);
+    }
+#else
+    #include <unistd.h>
+
+    template<typename = void>
+    void sleep(unsigned milliseconds)
+    {
+        usleep(milliseconds * 1000U); // takes microseconds
+    }
+#endif
+}
diff --git a/opentrack-compat/timer.hpp b/opentrack-compat/timer.hpp
new file mode 100644
index 00000000..fd710499
--- /dev/null
+++ b/opentrack-compat/timer.hpp
@@ -0,0 +1,75 @@
+/* Copyright (c) 2014-2015, Stanislaw Halik <sthalik@misaki.pl>
+
+ * Permission to use, copy, modify, and/or distribute this
+ * software for any purpose with or without fee is hereby granted,
+ * provided that the above copyright notice and this permission
+ * notice appear in all copies.
+ */
+
+#pragma once
+#include <ctime>
+#if defined (_WIN32)
+#   include <windows.h>
+#	ifndef CLOCK_MONOTONIC
+#   	define CLOCK_MONOTONIC -1
+#	endif
+static inline void opentrack_clock_gettime(int, struct timespec* ts)
+{
+    static LARGE_INTEGER freq;
+
+    if (!freq.QuadPart)
+        (void) QueryPerformanceFrequency(&freq);
+
+    LARGE_INTEGER d;
+
+    (void) QueryPerformanceCounter(&d);
+
+    d.QuadPart *= 1000000000L;
+    d.QuadPart /= freq.QuadPart;
+
+    ts->tv_sec = d.QuadPart / 1000000000L;
+    ts->tv_nsec = d.QuadPart % 1000000000L;
+}
+#	define clock_gettime opentrack_clock_gettime
+#else
+#   if defined(__MACH__)
+#       define CLOCK_MONOTONIC 0
+#       include <inttypes.h>
+#       include <mach/mach_time.h>
+static inline void clock_gettime(int, struct timespec* ts)
+{
+    static mach_timebase_info_data_t    sTimebaseInfo;
+    uint64_t state, nsec;
+    if ( sTimebaseInfo.denom == 0 ) {
+        (void) mach_timebase_info(&sTimebaseInfo);
+    }
+    state = mach_absolute_time();
+    nsec = state * sTimebaseInfo.numer / sTimebaseInfo.denom;
+    ts->tv_sec = nsec / 1000000000L;
+    ts->tv_nsec = nsec % 1000000000L;
+}
+#   endif
+#endif
+class Timer {
+private:
+    struct timespec state;
+    long conv(const struct timespec& cur)
+    {
+        return (cur.tv_sec - state.tv_sec) * 1000000000L + (cur.tv_nsec - state.tv_nsec);
+    }
+public:
+    Timer() {
+        start();
+    }
+    void start() {
+        (void) clock_gettime(CLOCK_MONOTONIC, &state);
+    }
+    long elapsed() {
+        struct timespec cur;
+        (void) clock_gettime(CLOCK_MONOTONIC, &cur);
+        return conv(cur);
+    }
+    long elapsed_ms() {
+        return elapsed() / 1000000L;
+    }
+};