#include <babeltrace/align-internal.h>
#include <stdlib.h>
#include <stdint.h>
-#include <sys/mman.h>
+#include <babeltrace/compat/mman-internal.h>
#include <babeltrace/common-internal.h>
/*
size_t length; /* virtual mmap length */
};
+#ifdef __WIN32__
+#include <windows.h>
+
+/*
+ * On windows the memory mapping offset must be aligned to the memory
+ * allocator allocation granularity and not the page size.
+ */
+static inline
+off_t get_page_aligned_offset(off_t offset, size_t page_size)
+{
+ SYSTEM_INFO sysinfo;
+
+ GetNativeSystemInfo(&sysinfo);
+
+ return ALIGN_FLOOR(offset, sysinfo.dwAllocationGranularity);
+}
+#else
+static inline
+off_t get_page_aligned_offset(off_t offset, size_t page_size)
+{
+ return ALIGN_FLOOR(offset, page_size);
+}
+#endif
+
static inline
struct mmap_align *mmap_align(size_t length, int prot,
int flags, int fd, off_t offset)
if (!mma)
return MAP_FAILED;
mma->length = length;
- page_aligned_offset = ALIGN_FLOOR(offset, page_size);
+ page_aligned_offset = get_page_aligned_offset(offset, page_size);
/*
* Page aligned length needs to contain the requested range.
* E.g., for a small range that fits within a single page, we might
mma->page_aligned_length = ALIGN(length + offset - page_aligned_offset, page_size);
mma->page_aligned_addr = mmap(NULL, mma->page_aligned_length,
prot, flags, fd, page_aligned_offset);
- if (mma->page_aligned_addr == (void *) -1UL) {
+ if (mma->page_aligned_addr == MAP_FAILED) {
free(mma);
return MAP_FAILED;
}