os_misc.c revision b8e80941 
1/**************************************************************************
2 *
3 * Copyright 2008-2010 Vmware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29#include "os_misc.h"
30
31#include <stdarg.h>
32
33
34#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
35
36#ifndef WIN32_LEAN_AND_MEAN
37#define WIN32_LEAN_AND_MEAN      // Exclude rarely-used stuff from Windows headers
38#endif
39#include <windows.h>
40#include <stdio.h>
41
42#else
43
44#include <stdio.h>
45#include <stdlib.h>
46
47#endif
48
49
50#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_CYGWIN) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HURD)
51#  include <unistd.h>
52#elif defined(PIPE_OS_APPLE) || defined(PIPE_OS_BSD)
53#  include <sys/sysctl.h>
54#elif defined(PIPE_OS_HAIKU)
55#  include <kernel/OS.h>
56#elif defined(PIPE_OS_WINDOWS)
57#  include <windows.h>
58#else
59#error unexpected platform in os_sysinfo.c
60#endif
61
62
63void
64os_log_message(const char *message)
65{
66   /* If the GALLIUM_LOG_FILE environment variable is set to a valid filename,
67    * write all messages to that file.
68    */
69   static FILE *fout = NULL;
70
71   if (!fout) {
72#ifdef DEBUG
73      /* one-time init */
74      const char *filename = os_get_option("GALLIUM_LOG_FILE");
75      if (filename) {
76         const char *mode = "w";
77         if (filename[0] == '+') {
78            /* If the filename is prefixed with '+' then open the file for
79             * appending instead of normal writing.
80             */
81            mode = "a";
82            filename++; /* skip the '+' */
83         }
84         fout = fopen(filename, mode);
85      }
86#endif
87      if (!fout)
88         fout = stderr;
89   }
90
91#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
92   OutputDebugStringA(message);
93   if(GetConsoleWindow() && !IsDebuggerPresent()) {
94      fflush(stdout);
95      fputs(message, fout);
96      fflush(fout);
97   }
98   else if (fout != stderr) {
99      fputs(message, fout);
100      fflush(fout);
101   }
102#else /* !PIPE_SUBSYSTEM_WINDOWS */
103   fflush(stdout);
104   fputs(message, fout);
105   fflush(fout);
106#endif
107}
108
109
110#if !defined(PIPE_SUBSYSTEM_EMBEDDED)
111const char *
112os_get_option(const char *name)
113{
114   return getenv(name);
115}
116#endif /* !PIPE_SUBSYSTEM_EMBEDDED */
117
118
119/**
120 * Return the size of the total physical memory.
121 * \param size returns the size of the total physical memory
122 * \return true for success, or false on failure
123 */
124bool
125os_get_total_physical_memory(uint64_t *size)
126{
127#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_CYGWIN) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HURD)
128   const long phys_pages = sysconf(_SC_PHYS_PAGES);
129   const long page_size = sysconf(_SC_PAGE_SIZE);
130
131   if (phys_pages <= 0 || page_size <= 0)
132      return false;
133
134   *size = (uint64_t)phys_pages * (uint64_t)page_size;
135   return true;
136#elif defined(PIPE_OS_APPLE) || defined(PIPE_OS_BSD)
137   size_t len = sizeof(*size);
138   int mib[2];
139
140   mib[0] = CTL_HW;
141#if defined(PIPE_OS_APPLE)
142   mib[1] = HW_MEMSIZE;
143#elif defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD)
144   mib[1] = HW_PHYSMEM64;
145#elif defined(PIPE_OS_FREEBSD)
146   mib[1] = HW_REALMEM;
147#elif defined(PIPE_OS_DRAGONFLY)
148   mib[1] = HW_PHYSMEM;
149#else
150#error Unsupported *BSD
151#endif
152
153   return (sysctl(mib, 2, size, &len, NULL, 0) == 0);
154#elif defined(PIPE_OS_HAIKU)
155   system_info info;
156   status_t ret;
157
158   ret = get_system_info(&info);
159   if (ret != B_OK || info.max_pages <= 0)
160      return false;
161
162   *size = (uint64_t)info.max_pages * (uint64_t)B_PAGE_SIZE;
163   return true;
164#elif defined(PIPE_OS_WINDOWS)
165   MEMORYSTATUSEX status;
166   BOOL ret;
167
168   status.dwLength = sizeof(status);
169   ret = GlobalMemoryStatusEx(&status);
170   *size = status.ullTotalPhys;
171   return (ret == TRUE);
172#else
173#error unexpected platform in os_sysinfo.c
174   return false;
175#endif
176}
177