liboffloadmic/runtime/offload_util.h

   1 /*
   2     Copyright (c) 2014 Intel Corporation.  All Rights Reserved.
   3
   4     Redistribution and use in source and binary forms, with or without
   5     modification, are permitted provided that the following conditions
   6     are met:
   7
   8       * Redistributions of source code must retain the above copyright
   9         notice, this list of conditions and the following disclaimer.
  10       * Redistributions in binary form must reproduce the above copyright
  11         notice, this list of conditions and the following disclaimer in the
  12         documentation and/or other materials provided with the distribution.
  13       * Neither the name of Intel Corporation nor the names of its
  14         contributors may be used to endorse or promote products derived
  15         from this software without specific prior written permission.
  16
  17     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20     A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21     HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23     LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 */
  29
  30
  31 #ifndef OFFLOAD_UTIL_H_INCLUDED
  32 #define OFFLOAD_UTIL_H_INCLUDED
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdint.h>
  37
  38 #ifdef TARGET_WINNT
  39 #include <windows.h>
  40 #include <process.h>
  41 #else // TARGET_WINNT
  42 #include <dlfcn.h>
  43 #include <pthread.h>
  44 #endif // TARGET_WINNT
  45
  46 #ifdef TARGET_WINNT
  47 typedef unsigned pthread_key_t;
  48 typedef int pid_t;
  49
  50 #define __func__ __FUNCTION__
  51 #define strtok_r(s,d,p) strtok_s(s,d,p)
  52 #define strcasecmp(a,b) stricmp(a,b)
  53
  54 #define thread_key_create(key, destructor) \
  55     (((*key = TlsAlloc()) > 0) ? 0 : GetLastError())
  56 #define thread_key_delete(key) TlsFree(key)
  57
  58 #ifndef S_ISREG
  59 #define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
  60 #endif
  61
  62 void*   thread_getspecific(pthread_key_t key);
  63 int     thread_setspecific(pthread_key_t key, const void *value);
  64 #else
  65 #define thread_key_create(key, destructor) \
  66             pthread_key_create((key), (destructor))
  67 #define thread_key_delete(key)  pthread_key_delete(key)
  68 #define thread_getspecific(key) pthread_getspecific(key)
  69 #define thread_setspecific(key, value) pthread_setspecific(key, value)
  70 #endif // TARGET_WINNT
  71
  72 // Mutex implementation
  73 struct mutex_t {
  74     mutex_t() {
  75 #ifdef TARGET_WINNT
  76         InitializeCriticalSection(&m_lock);
  77 #else // TARGET_WINNT
  78         pthread_mutex_init(&m_lock, 0);
  79 #endif // TARGET_WINNT
  80     }
  81
  82     ~mutex_t() {
  83 #ifdef TARGET_WINNT
  84         DeleteCriticalSection(&m_lock);
  85 #else // TARGET_WINNT
  86         pthread_mutex_destroy(&m_lock);
  87 #endif // TARGET_WINNT
  88     }
  89
  90     void lock() {
  91 #ifdef TARGET_WINNT
  92         EnterCriticalSection(&m_lock);
  93 #else // TARGET_WINNT
  94         pthread_mutex_lock(&m_lock);
  95 #endif // TARGET_WINNT
  96     }
  97
  98     void unlock() {
  99 #ifdef TARGET_WINNT
 100         LeaveCriticalSection(&m_lock);
 101 #else // TARGET_WINNT
 102         pthread_mutex_unlock(&m_lock);
 103 #endif // TARGET_WINNT
 104     }
 105
 106 private:
 107 #ifdef TARGET_WINNT
 108     CRITICAL_SECTION    m_lock;
 109 #else
 110     pthread_mutex_t     m_lock;
 111 #endif
 112 };
 113
 114 struct mutex_locker_t {
 115     mutex_locker_t(mutex_t &mutex) : m_mutex(mutex) {
 116         m_mutex.lock();
 117     }
 118
 119     ~mutex_locker_t() {
 120         m_mutex.unlock();
 121     }
 122
 123 private:
 124     mutex_t &m_mutex;
 125 };
 126
 127 // Dynamic loader interface
 128 #ifdef TARGET_WINNT
 129 struct Dl_info
 130 {
 131     char        dli_fname[MAX_PATH];
 132     void       *dli_fbase;
 133     char        dli_sname[MAX_PATH];
 134     const void *dli_saddr;
 135 };
 136
 137 void*   DL_open(const char *path);
 138 #define DL_close(handle)        FreeLibrary((HMODULE) (handle))
 139 int     DL_addr(const void *addr, Dl_info *info);
 140 #else
 141 #define DL_open(path)           dlopen((path), RTLD_NOW)
 142 #define DL_close(handle)        dlclose(handle)
 143 #define DL_addr(addr, info)     dladdr((addr), (info))
 144 #endif // TARGET_WINNT
 145
 146 extern void* DL_sym(void *handle, const char *name, const char *version);
 147
 148 // One-time initialization API
 149 #ifdef TARGET_WINNT
 150 typedef INIT_ONCE                   OffloadOnceControl;
 151 #define OFFLOAD_ONCE_CONTROL_INIT   INIT_ONCE_STATIC_INIT
 152
 153 extern void __offload_run_once(OffloadOnceControl *ctrl, void (*func)(void));
 154 #else
 155 typedef pthread_once_t              OffloadOnceControl;
 156 #define OFFLOAD_ONCE_CONTROL_INIT   PTHREAD_ONCE_INIT
 157
 158 #define __offload_run_once(ctrl, func) pthread_once(ctrl, func)
 159 #endif // TARGET_WINNT
 160
 161 // Parses size specification string.
 162 extern bool __offload_parse_size_string(const char *str, uint64_t &new_size);
 163
 164 // Parses string with integer value
 165 extern bool __offload_parse_int_string(const char *str, int64_t &value);
 166
 167 // get value by its base, offset and size
 168 int64_t get_el_value(
 169     char   *base,
 170     int64_t offset,
 171     int64_t size
 172 );
 173 #endif // OFFLOAD_UTIL_H_INCLUDED