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Windows port #5

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56 changes: 54 additions & 2 deletions minilisp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,59 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <inttypes.h>
#ifndef _WIN32
# include <sys/mman.h>
#else

#include <windows.h>
#include <io.h>

#define PROT_READ 1
#define PROT_WRITE 2
#define PROT_READWRITE 3
#define MAP_PRIVATE 0x02
#define MAP_ANON 0x20
#define MAP_FAILED ((void *) -1)

static void* mmap(char *addr, size_t length, int prot, int flags, int fd, off_t offset) {
HANDLE h = INVALID_HANDLE_VALUE;
void *p = NULL;

switch (prot) {
case PROT_READ:
default:
h = CreateFileMapping(
(HANDLE) _get_osfhandle(fd), 0, PAGE_READONLY, 0, length, 0);
if (!h) break;
p = MapViewOfFile(h, FILE_MAP_READ, 0, 0, length);
CloseHandle(h);
break;
case PROT_WRITE:
h = CreateFileMapping(
(HANDLE) _get_osfhandle(fd), 0, PAGE_READWRITE, 0, length, 0);
if (!h) break;
p = MapViewOfFile(h, FILE_MAP_WRITE, 0, 0, length);
CloseHandle(h);
break;
case PROT_READWRITE:
h = CreateFileMapping(
(HANDLE) _get_osfhandle(fd), 0, PAGE_READWRITE, 0, length, 0);
if (!h) break;
p = MapViewOfFile(h, FILE_MAP_ALL_ACCESS, 0, 0, length);
CloseHandle(h);
break;
}
if (p == NULL) return (void *) MAP_FAILED;
return (void *)(char *)(p + offset);
}

static int munmap(void *addr, size_t length) {
if (!UnmapViewOfFile(addr)) return -1;
return 0;
}

#endif

static __attribute((noreturn)) void error(char *fmt, ...) {
va_list ap;
Expand Down Expand Up @@ -320,7 +372,7 @@ static void gc(void *root) {
size_t old_nused = mem_nused;
mem_nused = (size_t)((uint8_t *)scan1 - (uint8_t *)memory);
if (debug_gc)
fprintf(stderr, "GC: %zu bytes out of %zu bytes copied.\n", mem_nused, old_nused);
fprintf(stderr, "GC: %" PRIu64 " bytes out of %" PRIu64 " bytes copied.\n", mem_nused, old_nused);
gc_running = false;
}

Expand Down