annotate system/System.cpp @ 717:bcdb2a18d9bc library_integration

Revert that change -- this code is used only in Sonic Annotator
author Chris Cannam
date Tue, 18 Oct 2011 10:14:17 +0100
parents b4a8d8221eaf
children 001d77a720ce
rev   line source
Chris@223 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@223 2
Chris@223 3 /*
Chris@223 4 Sonic Visualiser
Chris@223 5 An audio file viewer and annotation editor.
Chris@223 6 Centre for Digital Music, Queen Mary, University of London.
Chris@223 7 This file copyright 2006 Chris Cannam and QMUL.
Chris@223 8
Chris@223 9 This program is free software; you can redistribute it and/or
Chris@223 10 modify it under the terms of the GNU General Public License as
Chris@223 11 published by the Free Software Foundation; either version 2 of the
Chris@223 12 License, or (at your option) any later version. See the file
Chris@223 13 COPYING included with this distribution for more information.
Chris@223 14 */
Chris@223 15
Chris@223 16 #include "System.h"
Chris@223 17
Chris@223 18 #include <QStringList>
Chris@223 19 #include <QString>
Chris@223 20
Chris@223 21 #include <stdint.h>
Chris@223 22
Chris@223 23 #ifndef _WIN32
Chris@223 24 #include <signal.h>
Chris@223 25 #include <sys/statvfs.h>
Chris@608 26 #include <locale.h>
Chris@608 27 #include <unistd.h>
Chris@223 28 #endif
Chris@223 29
Chris@223 30 #ifdef __APPLE__
Chris@223 31 #include <sys/param.h>
Chris@223 32 #include <sys/sysctl.h>
Chris@223 33 #endif
Chris@223 34
Chris@405 35 #include <limits.h>
Chris@405 36 #include <cstdlib>
Chris@405 37
Chris@223 38 #include <iostream>
Chris@223 39
Chris@255 40 #ifdef __APPLE__
Chris@255 41 extern "C" {
Chris@255 42 void *
Chris@255 43 rpl_realloc (void *p, size_t n)
Chris@255 44 {
Chris@255 45 p = realloc(p, n);
Chris@255 46 if (p == 0 && n == 0)
Chris@255 47 {
Chris@255 48 p = malloc(0);
Chris@255 49 }
Chris@255 50 return p;
Chris@255 51 }
Chris@255 52 }
Chris@255 53 #endif
Chris@255 54
Chris@223 55 #ifdef _WIN32
Chris@223 56
Chris@223 57 extern "C" {
Chris@223 58
Chris@223 59 void usleep(unsigned long usec)
Chris@223 60 {
Chris@223 61 ::Sleep(usec / 1000);
Chris@223 62 }
Chris@223 63
Chris@501 64 int gettimeofday(struct timeval *tv, void *tz)
Chris@223 65 {
Chris@223 66 union {
Chris@223 67 long long ns100;
Chris@223 68 FILETIME ft;
Chris@223 69 } now;
Chris@223 70
Chris@223 71 ::GetSystemTimeAsFileTime(&now.ft);
Chris@223 72 tv->tv_usec = (long)((now.ns100 / 10LL) % 1000000LL);
Chris@223 73 tv->tv_sec = (long)((now.ns100 - 116444736000000000LL) / 10000000LL);
Chris@572 74 return 0;
Chris@223 75 }
Chris@223 76
Chris@223 77 }
Chris@223 78
Chris@223 79 #endif
Chris@223 80
Chris@223 81 ProcessStatus
Chris@223 82 GetProcessStatus(int pid)
Chris@223 83 {
Chris@223 84 #ifdef _WIN32
Chris@223 85 HANDLE handle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
Chris@223 86 if (!handle) {
Chris@223 87 return ProcessNotRunning;
Chris@223 88 } else {
Chris@223 89 CloseHandle(handle);
Chris@223 90 return ProcessRunning;
Chris@223 91 }
Chris@223 92 #else
Chris@223 93 if (kill(getpid(), 0) == 0) {
Chris@223 94 if (kill(pid, 0) == 0) {
Chris@223 95 return ProcessRunning;
Chris@223 96 } else {
Chris@223 97 return ProcessNotRunning;
Chris@223 98 }
Chris@223 99 } else {
Chris@223 100 return UnknownProcessStatus;
Chris@223 101 }
Chris@223 102 #endif
Chris@223 103 }
Chris@223 104
Chris@223 105 #ifdef _WIN32
Chris@223 106 /* MEMORYSTATUSEX is missing from older Windows headers, so define a
Chris@223 107 local replacement. This trick from MinGW source code. Ugh */
Chris@223 108 typedef struct
Chris@223 109 {
Chris@223 110 DWORD dwLength;
Chris@223 111 DWORD dwMemoryLoad;
Chris@223 112 DWORDLONG ullTotalPhys;
Chris@223 113 DWORDLONG ullAvailPhys;
Chris@223 114 DWORDLONG ullTotalPageFile;
Chris@223 115 DWORDLONG ullAvailPageFile;
Chris@223 116 DWORDLONG ullTotalVirtual;
Chris@223 117 DWORDLONG ullAvailVirtual;
Chris@223 118 DWORDLONG ullAvailExtendedVirtual;
Chris@223 119 } lMEMORYSTATUSEX;
Chris@223 120 typedef WINBOOL (WINAPI *PFN_MS_EX) (lMEMORYSTATUSEX*);
Chris@223 121 #endif
Chris@223 122
Chris@223 123 void
Chris@223 124 GetRealMemoryMBAvailable(int &available, int &total)
Chris@223 125 {
Chris@223 126 available = -1;
Chris@223 127 total = -1;
Chris@223 128
Chris@223 129 #ifdef _WIN32
Chris@223 130
Chris@223 131 static bool checked = false;
Chris@223 132 static bool exFound = false;
Chris@223 133 static PFN_MS_EX ex;
Chris@223 134
Chris@223 135 if (!checked) {
Chris@223 136
Chris@223 137 HMODULE h = GetModuleHandleA("kernel32.dll");
Chris@223 138
Chris@223 139 if (h) {
Chris@223 140 if ((ex = (PFN_MS_EX)GetProcAddress(h, "GlobalMemoryStatusEx"))) {
Chris@223 141 exFound = true;
Chris@223 142 }
Chris@223 143 }
Chris@223 144
Chris@223 145 checked = true;
Chris@223 146 }
Chris@223 147
Chris@223 148 DWORDLONG wavail = 0;
Chris@223 149 DWORDLONG wtotal = 0;
Chris@223 150
Chris@223 151 if (exFound) {
Chris@223 152
Chris@223 153 lMEMORYSTATUSEX lms;
Chris@223 154 lms.dwLength = sizeof(lms);
Chris@223 155 if (!ex(&lms)) {
Chris@223 156 std::cerr << "WARNING: GlobalMemoryStatusEx failed: error code "
Chris@223 157 << GetLastError() << std::endl;
Chris@223 158 return;
Chris@223 159 }
Chris@223 160 wavail = lms.ullAvailPhys;
Chris@223 161 wtotal = lms.ullTotalPhys;
Chris@223 162
Chris@223 163 } else {
Chris@223 164
Chris@223 165 /* Fall back to GlobalMemoryStatus which is always available.
Chris@223 166 but returns wrong results for physical memory > 4GB */
Chris@223 167
Chris@223 168 MEMORYSTATUS ms;
Chris@223 169 GlobalMemoryStatus(&ms);
Chris@223 170 wavail = ms.dwAvailPhys;
Chris@223 171 wtotal = ms.dwTotalPhys;
Chris@223 172 }
Chris@223 173
Chris@223 174 DWORDLONG size = wavail / 1048576;
Chris@223 175 if (size > INT_MAX) size = INT_MAX;
Chris@223 176 available = int(size);
Chris@223 177
Chris@223 178 size = wtotal / 1048576;
Chris@223 179 if (size > INT_MAX) size = INT_MAX;
Chris@223 180 total = int(size);
Chris@223 181
Chris@223 182 return;
Chris@223 183
Chris@223 184 #else
Chris@223 185 #ifdef __APPLE__
Chris@223 186
Chris@223 187 unsigned int val;
Chris@223 188 int mib[2];
Chris@223 189 size_t size_sys;
Chris@223 190
Chris@223 191 mib[0] = CTL_HW;
Chris@223 192
Chris@223 193 mib[1] = HW_PHYSMEM;
Chris@223 194 size_sys = sizeof(val);
Chris@223 195 sysctl(mib, 2, &val, &size_sys, NULL, 0);
Chris@223 196 if (val) total = val / 1048576;
Chris@223 197
Chris@223 198 mib[1] = HW_USERMEM;
Chris@223 199 size_sys = sizeof(val);
Chris@223 200 sysctl(mib, 2, &val, &size_sys, NULL, 0);
Chris@223 201 if (val) available = val / 1048576;
Chris@223 202
Chris@223 203 return;
Chris@223 204
Chris@223 205 #else
Chris@223 206
Chris@223 207 FILE *meminfo = fopen("/proc/meminfo", "r");
Chris@223 208 if (!meminfo) return;
Chris@223 209
Chris@223 210 char buf[256];
Chris@223 211 while (!feof(meminfo)) {
Chris@223 212 fgets(buf, 256, meminfo);
Chris@223 213 bool isMemFree = (strncmp(buf, "MemFree:", 8) == 0);
Chris@223 214 bool isMemTotal = (!isMemFree && (strncmp(buf, "MemTotal:", 9) == 0));
Chris@223 215 if (isMemFree || isMemTotal) {
Chris@223 216 QString line = QString(buf).trimmed();
Chris@223 217 QStringList elements = line.split(' ', QString::SkipEmptyParts);
Chris@223 218 QString unit = "kB";
Chris@223 219 if (elements.size() > 2) unit = elements[2];
Chris@223 220 int size = elements[1].toInt();
Chris@223 221 // std::cerr << "have size \"" << size << "\", unit \""
Chris@686 222 // << unit << "\"" << std::endl;
Chris@223 223 if (unit.toLower() == "gb") size = size * 1024;
Chris@223 224 else if (unit.toLower() == "mb") size = size;
Chris@223 225 else if (unit.toLower() == "kb") size = size / 1024;
Chris@223 226 else size = size / 1048576;
Chris@223 227
Chris@223 228 if (isMemFree) available = size;
Chris@223 229 else total = size;
Chris@223 230 }
Chris@223 231 if (available != -1 && total != -1) {
Chris@223 232 fclose(meminfo);
Chris@223 233 return;
Chris@223 234 }
Chris@223 235 }
Chris@223 236 fclose(meminfo);
Chris@223 237
Chris@223 238 return;
Chris@223 239
Chris@223 240 #endif
Chris@223 241 #endif
Chris@223 242 }
Chris@223 243
Chris@223 244 int
Chris@223 245 GetDiscSpaceMBAvailable(const char *path)
Chris@223 246 {
Chris@223 247 #ifdef _WIN32
Chris@223 248 ULARGE_INTEGER available, total, totalFree;
Chris@223 249 if (GetDiskFreeSpaceExA(path, &available, &total, &totalFree)) {
Chris@223 250 __int64 a = available.QuadPart;
Chris@223 251 a /= 1048576;
Chris@223 252 if (a > INT_MAX) a = INT_MAX;
Chris@223 253 return int(a);
Chris@223 254 } else {
Chris@223 255 std::cerr << "WARNING: GetDiskFreeSpaceEx failed: error code "
Chris@223 256 << GetLastError() << std::endl;
Chris@223 257 return -1;
Chris@223 258 }
Chris@223 259 #else
Chris@223 260 struct statvfs buf;
Chris@223 261 if (!statvfs(path, &buf)) {
Chris@223 262 // do the multiplies and divides in this order to reduce the
Chris@223 263 // likelihood of arithmetic overflow
Chris@436 264 // std::cerr << "statvfs(" << path << ") says available: " << buf.f_bavail << ", block size: " << buf.f_bsize << std::endl;
Chris@223 265 uint64_t available = ((buf.f_bavail / 1024) * buf.f_bsize) / 1024;
Chris@223 266 if (available > INT_MAX) available = INT_MAX;
Chris@223 267 return int(available);
Chris@223 268 } else {
Chris@223 269 perror("statvfs failed");
Chris@223 270 return -1;
Chris@223 271 }
Chris@223 272 #endif
Chris@223 273 }
Chris@303 274
Chris@303 275 static char *startupLocale = 0;
Chris@303 276
Chris@303 277 void
Chris@303 278 StoreStartupLocale()
Chris@303 279 {
Chris@303 280 char *loc = setlocale(LC_ALL, 0);
Chris@303 281 if (!loc) return;
Chris@303 282 if (startupLocale) free(startupLocale);
Chris@303 283 startupLocale = strdup(loc);
Chris@303 284 }
Chris@303 285
Chris@303 286 void
Chris@303 287 RestoreStartupLocale()
Chris@303 288 {
Chris@303 289 if (!startupLocale) {
Chris@303 290 setlocale(LC_ALL, "");
Chris@303 291 } else {
Chris@303 292 setlocale(LC_ALL, startupLocale);
Chris@303 293 }
Chris@303 294 }
Chris@223 295
Chris@223 296 double mod(double x, double y) { return x - (y * floor(x / y)); }
Chris@223 297 float modf(float x, float y) { return x - (y * floorf(x / y)); }
Chris@223 298
Chris@223 299 double princarg(double a) { return mod(a + M_PI, -2 * M_PI) + M_PI; }
Chris@223 300 float princargf(float a) { return modf(a + M_PI, -2 * M_PI) + M_PI; }
Chris@223 301