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Replace some macros with static functions or constants

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This commit is contained in:
Rangi42
2024-03-07 16:03:27 -05:00
parent 90356ee669
commit aed172071b
6 changed files with 157 additions and 165 deletions
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77
src/asm/lexer.cpp
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@@ -50,48 +50,49 @@
#include <memoryapi.h> // MapViewOfFile
#include <handleapi.h> // CloseHandle
// clang-format on
#define MAP_FAILED nullptr
#define mapFile(ptr, fd, path, size) \
do { \
(ptr) = MAP_FAILED; \
HANDLE file = CreateFileA( \
path, \
GENERIC_READ, \
FILE_SHARE_READ, \
nullptr, \
OPEN_EXISTING, \
FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_RANDOM_ACCESS, \
nullptr \
); \
HANDLE mappingObj; \
if (file == INVALID_HANDLE_VALUE) \
break; \
mappingObj = CreateFileMappingA(file, nullptr, PAGE_READONLY, 0, 0, nullptr); \
if (mappingObj != INVALID_HANDLE_VALUE) \
(ptr) = MapViewOfFile(mappingObj, FILE_MAP_READ, 0, 0, 0); \
CloseHandle(mappingObj); \
CloseHandle(file); \
} while (0)
#define munmap(ptr, size) UnmapViewOfFile((ptr))
static void mapFile(void *&mappingAddr, int fd, char const *path, size_t) {
mappingAddr = MAP_FAILED;
HANDLE file = CreateFileA(
path,
GENERIC_READ,
FILE_SHARE_READ,
nullptr,
OPEN_EXISTING,
FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_RANDOM_ACCESS,
nullptr
);
HANDLE mappingObj;
if (file == INVALID_HANDLE_VALUE)
return;
mappingObj = CreateFileMappingA(file, nullptr, PAGE_READONLY, 0, 0, nullptr);
if (mappingObj != INVALID_HANDLE_VALUE)
mappingAddr = MapViewOfFile(mappingObj, FILE_MAP_READ, 0, 0, 0);
CloseHandle(mappingObj);
CloseHandle(file);
}
static int munmap(void *mappingAddr, size_t) {
return UnmapViewOfFile(mappingAddr) == 0 ? -1 : 0;
}
#else // defined(_MSC_VER) || defined(__MINGW32__)
#include <sys/mman.h>
#define mapFile(ptr, fd, path, size) \
do { \
(ptr) = mmap(nullptr, (size), PROT_READ, MAP_PRIVATE, (fd), 0); \
if ((ptr) == MAP_FAILED && errno == ENOTSUP) { \
/* \
* The implementation may not support MAP_PRIVATE; try again with MAP_SHARED \
* instead, offering, I believe, weaker guarantees about external modifications to \
* the file while reading it. That's still better than not opening it at all, \
* though \
*/ \
if (verbose) \
printf("mmap(%s, MAP_PRIVATE) failed, retrying with MAP_SHARED\n", path); \
(ptr) = mmap(nullptr, (size), PROT_READ, MAP_SHARED, (fd), 0); \
} \
} while (0)
static void mapFile(void *&mappingAddr, int fd, char const *path, size_t size) {
mappingAddr = mmap(nullptr, size, PROT_READ, MAP_PRIVATE, fd, 0);
if (mappingAddr == MAP_FAILED && errno == ENOTSUP) {
// The implementation may not support MAP_PRIVATE; try again with MAP_SHARED
// instead, offering, I believe, weaker guarantees about external modifications to
// the file while reading it. That's still better than not opening it at all, though.
if (verbose)
printf("mmap(%s, MAP_PRIVATE) failed, retrying with MAP_SHARED\n", path);
mappingAddr = mmap(nullptr, size, PROT_READ, MAP_SHARED, fd, 0);
}
}
#endif // !( defined(_MSC_VER) || defined(__MINGW32__) )
// Bison 3.6 changed token "types" to "kinds"; cast to int for simple compatibility