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Limit max cache to 1800MiB for 32bits compiled binaries and to 4GiB for other. Closes #1698.

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This commit is contained in:
sledgehammer999 2014-08-07 23:05:47 +03:00
parent 97cf824c4d
commit 7763a6d2d5
2 changed files with 37 additions and 3 deletions
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10
src/preferences/advancedsettings.h
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@ -170,7 +170,15 @@ private slots:
const Preferences* const pref = Preferences::instance();
// Disk write cache
spin_cache.setMinimum(0);
spin_cache.setMaximum(2048);
// When build as 32bit binary, set the maximum at less than 2GB to prevent crashes.
// These macros may not be available on compilers other than MSVC and GCC
#if !defined(_M_X64) || !defined(__amd64__)
//1800MiB to leave 248MiB room to the rest of program data in RAM
spin_cache.setMaximum(1800);
#else
// 4GiB
spin_cache.setMaximum(4*1024);
#endif
spin_cache.setValue(pref->diskCacheSize());
updateCacheSpinSuffix(spin_cache.value());
setRow(DISK_CACHE, tr("Disk write cache size"), &spin_cache);

30
src/preferences/preferences.cpp
View File

@ -1098,11 +1098,37 @@ void Preferences::setShutdownqBTWhenDownloadsComplete(bool shutdown) {
}
uint Preferences::diskCacheSize() const {
return value("Preferences/Downloads/DiskWriteCacheSize", 0).toUInt();
uint size = value("Preferences/Downloads/DiskWriteCacheSize", 0).toUInt();
// When build as 32bit binary, set the maximum at less than 2GB to prevent crashes.
// These macros may not be available on compilers other than MSVC and GCC
#if !defined(_M_X64) || !defined(__amd64__)
//1800MiB to leave 248MiB room to the rest of program data in RAM
if (size > 1800)
size = 1800;
#else
// 4GiB
if (size > 4*1024)
size = 4*1024;
#endif
return size;
}
void Preferences::setDiskCacheSize(uint size) {
setValue("Preferences/Downloads/DiskWriteCacheSize", size);
uint size0 = size;
#if !defined(_M_X64) || !defined(__amd64__)
//1800MiB to leave 248MiB room to the rest of program data in RAM
if (size0 > 1800)
size0 = 1800;
#else
// 4GiB
if (size0 > 4*1024)
size0 = 4*1024;
#endif
setValue("Preferences/Downloads/DiskWriteCacheSize", size0);
}
uint Preferences::diskCacheTTL() const {