diff options
author | reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-03-18 19:32:58 +0000 |
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committer | reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-03-18 19:32:58 +0000 |
commit | 1311f7e7f43d00cd1fa6802a414e987e60e6d67d (patch) | |
tree | 3d7c3ce7ecf7634e6563bb973736a1b01b19772f /src/core | |
parent | d5ea2aeb6082840c598818aba37fcb8e08773341 (diff) |
revert 8200 to figure out android break
git-svn-id: http://skia.googlecode.com/svn/trunk@8201 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/SkData.cpp | 22 | ||||
-rw-r--r-- | src/core/SkMMapStream.cpp | 77 | ||||
-rw-r--r-- | src/core/SkStream.cpp | 64 |
3 files changed, 77 insertions, 86 deletions
diff --git a/src/core/SkData.cpp b/src/core/SkData.cpp index 8fbca7af5f..3e0c71a0e8 100644 --- a/src/core/SkData.cpp +++ b/src/core/SkData.cpp @@ -8,13 +8,6 @@ #include "SkData.h" #include "SkFlattenableBuffers.h" -#if SK_MMAP_SUPPORT - #include <unistd.h> - #include <sys/mman.h> - #include <fcntl.h> - #include <errno.h> -#endif - SK_DEFINE_INST_COUNT(SkData) SkData::SkData(const void* ptr, size_t size, ReleaseProc proc, void* context) { @@ -127,20 +120,6 @@ SkData* SkData::NewWithCString(const char cstr[]) { return NewWithCopy(cstr, size); } -#if SK_MMAP_SUPPORT -static void sk_munmap_releaseproc(const void* addr, size_t length, void*) { - munmap(const_cast<void*>(addr), length); -} - -SkData* SkData::NewFromMMap(const void* addr, size_t length) { - return SkNEW_ARGS(SkData, (addr, length, sk_munmap_releaseproc, NULL)); -} -#else -SkData* SkData::NewFromMMap(const void* addr, size_t length) { - return NULL; -} -#endif - /////////////////////////////////////////////////////////////////////////////// void SkData::flatten(SkFlattenableWriteBuffer& buffer) const { @@ -321,4 +300,3 @@ SkDataSet* SkDataSet::NewEmpty() { gEmptySet->ref(); return gEmptySet; } - diff --git a/src/core/SkMMapStream.cpp b/src/core/SkMMapStream.cpp new file mode 100644 index 0000000000..7388e81498 --- /dev/null +++ b/src/core/SkMMapStream.cpp @@ -0,0 +1,77 @@ + +/* + * Copyright 2011 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ +#include "SkMMapStream.h" + +#include <unistd.h> +#include <sys/mman.h> +#include <fcntl.h> +#include <errno.h> + +SkMMAPStream::SkMMAPStream(const char filename[]) +{ + fAddr = NULL; // initialize to failure case + fSize = 0; + + int fildes = open(filename, O_RDONLY); + if (fildes < 0) + { + SkDEBUGF(("---- failed to open(%s) for mmap stream error=%d\n", filename, errno)); + return; + } + + off_t offset = lseek(fildes, 0, SEEK_END); // find the file size + if (offset == -1) + { + SkDEBUGF(("---- failed to lseek(%s) for mmap stream error=%d\n", filename, errno)); + close(fildes); + return; + } + (void)lseek(fildes, 0, SEEK_SET); // restore file offset to beginning + + // to avoid a 64bit->32bit warning, I explicitly create a size_t size + size_t size = static_cast<size_t>(offset); + + void* addr = mmap(NULL, size, PROT_READ, MAP_SHARED, fildes, 0); + + // According to the POSIX documentation of mmap it adds an extra reference + // to the file associated with the fildes which is not removed by a + // subsequent close() on that fildes. This reference is removed when there + // are no more mappings to the file. + close(fildes); + + if (MAP_FAILED == addr) + { + SkDEBUGF(("---- failed to mmap(%s) for mmap stream error=%d\n", filename, errno)); + return; + } + + this->INHERITED::setMemory(addr, size); + + fAddr = addr; + fSize = size; +} + +SkMMAPStream::~SkMMAPStream() +{ + this->closeMMap(); +} + +void SkMMAPStream::setMemory(const void* data, size_t length, bool copyData) +{ + this->closeMMap(); + this->INHERITED::setMemory(data, length, copyData); +} + +void SkMMAPStream::closeMMap() +{ + if (fAddr) + { + munmap(fAddr, fSize); + fAddr = NULL; + } +} diff --git a/src/core/SkStream.cpp b/src/core/SkStream.cpp index acbcfbc53d..fb343ea76a 100644 --- a/src/core/SkStream.cpp +++ b/src/core/SkStream.cpp @@ -13,14 +13,6 @@ #include "SkString.h" #include "SkOSFile.h" -#if SK_MMAP_SUPPORT - #include <unistd.h> - #include <sys/mman.h> - #include <fcntl.h> - #include <errno.h> - #include <unistd.h> -#endif - SK_DEFINE_INST_COUNT(SkStream) SK_DEFINE_INST_COUNT(SkWStream) SK_DEFINE_INST_COUNT(SkFILEStream) @@ -797,59 +789,3 @@ bool SkDebugWStream::write(const void* buffer, size_t size) #endif return true; } - -/////////////////////////////////////////////////////////////////////////////// -/////////////////////////////////////////////////////////////////////////////// - -static bool mmap_filename(const char path[], void** addrPtr, size_t* sizePtr) { -#if SK_MMAP_SUPPORT - int fd = open(path, O_RDONLY); - if (fd < 0) { - return false; - } - - off_t offset = lseek(fd, 0, SEEK_END); // find the file size - if (offset == -1) { - close(fd); - return false; - } - (void)lseek(fd, 0, SEEK_SET); // restore file offset to beginning - - // to avoid a 64bit->32bit warning, I explicitly create a size_t size - size_t size = static_cast<size_t>(offset); - - void* addr = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); - close(fd); - - if (MAP_FAILED == addr) { - return false; - } - - *addrPtr = addr; - *sizePtr = size; - return true; -#else - return false; -#endif -} - -SkStream* SkStream::NewFromFile(const char path[]) { - void* addr; - size_t size; - if (mmap_filename(path, &addr, &size)) { - SkAutoTUnref<SkData> data(SkData::NewFromMMap(addr, size)); - if (data.get()) { - return SkNEW_ARGS(SkMemoryStream, (data.get())); - } - } - - // If we get here, then our attempt at using mmap failed, so try normal - // file access. - SkFILEStream* stream = SkNEW_ARGS(SkFILEStream, (path)); - if (!stream->isValid()) { - stream->unref(); - stream = NULL; - } - return stream; -} - |