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minor improvements to mmap.cpp

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Wenzel Jakob 2012-03-26 12:51:55 -04:00
parent 813e32e790
commit 4c3b1d0014
1 changed files with 18 additions and 15 deletions
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33
src/libcore/mmap.cpp
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@ -7,7 +7,7 @@
MTS_NAMESPACE_BEGIN
MemoryMappedFile::MemoryMappedFile(const fs::path &filename) : m_filename(filename) {
MemoryMappedFile::MemoryMappedFile(const fs::path &filename) : m_filename(filename), m_data(NULL) {
if (!fs::exists(filename))
Log(EError, "The file \"%s\" does not exist!", filename.file_string().c_str());
m_size = (size_t) fs::file_size(filename);
@ -41,20 +41,23 @@ MemoryMappedFile::MemoryMappedFile(const fs::path &filename) : m_filename(filena
}
MemoryMappedFile::~MemoryMappedFile() {
#if defined(__LINUX__) || defined(__OSX__)
Log(ETrace, "Unmapping \"%s\" from memory",
m_filename.file_string().c_str());
int retval = munmap(m_data, m_size);
if (retval != 0)
Log(EError, "munmap(): unable to unmap memory!");
#elif defined(WIN32)
if (!UnmapViewOfFile(m_data))
Log(EError, "UnmapViewOfFile(): unable to unmap memory: %s", lastErrorText().c_str());
if (!CloseHandle(m_fileMapping))
Log(EError, "CloseHandle(): unable to close file mapping: %s", lastErrorText().c_str());
if (!CloseHandle(m_file))
Log(EError, "CloseHandle(): unable to close file: %s", lastErrorText().c_str());
#endif
if (m_data) {
Log(ETrace, "Unmapping \"%s\" from memory",
m_filename.file_string().c_str());
#if defined(__LINUX__) || defined(__OSX__)
int retval = munmap(m_data, m_size);
if (retval != 0)
Log(EError, "munmap(): unable to unmap memory!");
#elif defined(WIN32)
if (!UnmapViewOfFile(m_data))
Log(EError, "UnmapViewOfFile(): unable to unmap memory: %s", lastErrorText().c_str());
if (!CloseHandle(m_fileMapping))
Log(EError, "CloseHandle(): unable to close file mapping: %s", lastErrorText().c_str());
if (!CloseHandle(m_file))
Log(EError, "CloseHandle(): unable to close file: %s", lastErrorText().c_str());
#endif
}
}
MTS_IMPLEMENT_CLASS(MemoryMappedFile, false, Object)