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Use proper temporary files instead of fixed names

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This commit is contained in:
Eric Fischer 2014-09-18 12:11:36 -07:00
parent e8adeba40e
commit f4a40cb16c
1 changed files with 30 additions and 18 deletions
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48
geojson.c
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@ -73,6 +73,10 @@ void latlon2tile(double lat, double lon, int zoom, unsigned int *x, unsigned int
#define MAX_ZOOM 28
#define ZOOM_BITS 5
#if (2 * MAX_ZOOM) + ZOOM_BITS > 64
#error "Not enough bits for index"
#endif
int get_bbox_zoom(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2) {
int z;
for (z = 0; z < MAX_ZOOM; z++) {
@ -287,8 +291,14 @@ void check(struct index *ix, long long n, char *metabase) {
void read_json(FILE *f) {
json_pull *jp = json_begin_file(f);
FILE *metafile = fopen("meta.out", "wb");
FILE *indexfile = fopen("index.out", "wb");
char metaname[] = "/tmp/meta.XXXXXXXX";
char indexname[] = "/tmp/index.XXXXXXXX";
int metafd = mkstemp(metaname);
int indexfd = mkstemp(indexname);
FILE *metafile = fopen(metaname, "wb");
FILE *indexfile = fopen(indexname, "wb");
long long fpos = 0;
unsigned file_bbox[] = { UINT_MAX, UINT_MAX, 0, 0 };
@ -415,37 +425,39 @@ next_feature:
/* XXX check for any non-features in the outer object */
}
printf("bbox: %x %x %x %x\n", file_bbox[0], file_bbox[1], file_bbox[2], file_bbox[3]);
json_end(jp);
fclose(metafile);
fclose(indexfile);
int fd = open("index.out", O_RDWR);
struct stat st;
fstat(fd, &st);
struct index *index = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
printf("bbox: %x %x %x %x\n", file_bbox[0], file_bbox[1], file_bbox[2], file_bbox[3]);
struct stat indexst;
fstat(indexfd, &indexst);
struct index *index = mmap(NULL, indexst.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, indexfd, 0);
if (index == MAP_FAILED) {
perror("mmap index");
exit(EXIT_FAILURE);
}
int mfd = open("meta.out", O_RDWR);
struct stat mst;
fstat(mfd, &mst);
char *meta = mmap(NULL, mst.st_size, PROT_READ, MAP_PRIVATE, mfd, 0);
struct stat metast;
fstat(metafd, &metast);
char *meta = mmap(NULL, metast.st_size, PROT_READ, MAP_PRIVATE, metafd, 0);
if (meta == MAP_FAILED) {
perror("mmap meta");
exit(EXIT_FAILURE);
}
qsort(index, st.st_size / sizeof(struct index), sizeof(struct index), indexcmp);
check(index, st.st_size / sizeof(struct index), meta);
qsort(index, indexst.st_size / sizeof(struct index), sizeof(struct index), indexcmp);
check(index, indexst.st_size / sizeof(struct index), meta);
munmap(index, st.st_size);
munmap(meta, mst.st_size);
close(fd);
close(mfd);
munmap(index, indexst.st_size);
munmap(meta, metast.st_size);
close(indexfd);
close(metafd);
unlink(metaname);
unlink(indexname);
}
int main(int argc, char **argv) {