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Try to increase file descriptor rlimit if necessary

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As the default can be too low, especially on OSX.
This commit is contained in:
Pieter Wuille
2013-04-26 00:46:47 +02:00
parent 33029bcedd
commit ba29a5590b
5 changed files with 48 additions and 2 deletions
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23
src/util.cpp
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@@ -10,6 +10,7 @@
#endif
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/resource.h>
#endif
#include "util.h"
@@ -1167,6 +1168,28 @@ bool TruncateFile(FILE *file, unsigned int length) {
#endif
}
// this function tries to raise the file descriptor limit to the requested number.
// It returns the actual file descriptor limit (which may be more or less than nMinFD)
int RaiseFileDescriptorLimit(int nMinFD) {
#if defined(WIN32)
return 2048;
#else
struct rlimit limitFD;
if (getrlimit(RLIMIT_NOFILE, &limitFD) != -1) {
if (limitFD.rlim_cur < (rlim_t)nMinFD) {
limitFD.rlim_cur = nMinFD;
if (limitFD.rlim_cur > limitFD.rlim_max)
limitFD.rlim_cur = limitFD.rlim_max;
setrlimit(RLIMIT_NOFILE, &limitFD);
getrlimit(RLIMIT_NOFILE, &limitFD);
}
return limitFD.rlim_cur;
}
return nMinFD; // getrlimit failed, assume it's fine
#endif
}
// this function tries to make a particular range of a file allocated (corresponding to disk space)
// it is advisory, and the range specified in the arguments will never contain live data
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length) {