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stage1 caching system: detect problematic mtimes

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closes #2045
This commit is contained in:
Andrew Kelley
2019-03-11 10:26:08 -04:00
parent fec4555476
commit 3a6f19de48
8 changed files with 189 additions and 70 deletions
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30
src/codegen.cpp
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@@ -7724,8 +7724,11 @@ static Error define_builtin_compile_vars(CodeGen *g) {
Buf digest = BUF_INIT;
buf_resize(&digest, 0);
if ((err = cache_hit(&cache_hash, &digest)))
return err;
if ((err = cache_hit(&cache_hash, &digest))) {
// Treat an invalid format error as a cache miss.
if (err != ErrorInvalidFormat)
return err;
}
// We should always get a cache hit because there are no
// files in the input hash.
@@ -8342,12 +8345,14 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
Buf digest = BUF_INIT;
buf_resize(&digest, 0);
if ((err = cache_hit(cache_hash, &digest))) {
if (err == ErrorCacheUnavailable) {
// already printed error
} else {
fprintf(stderr, "unable to check cache when compiling C object: %s\n", err_str(err));
if (err != ErrorInvalidFormat) {
if (err == ErrorCacheUnavailable) {
// already printed error
} else {
fprintf(stderr, "unable to check cache when compiling C object: %s\n", err_str(err));
}
exit(1);
}
exit(1);
}
bool is_cache_miss = (buf_len(&digest) == 0);
if (is_cache_miss) {
@@ -8993,7 +8998,10 @@ void codegen_print_timing_report(CodeGen *g, FILE *f) {
}
void codegen_add_time_event(CodeGen *g, const char *name) {
g->timing_events.append({os_get_time(), name});
OsTimeStamp timestamp = os_timestamp_monotonic();
double seconds = (double)timestamp.sec;
seconds += ((double)timestamp.nsec) / 1000000000.0;
g->timing_events.append({seconds, name});
}
static void add_cache_pkg(CodeGen *g, CacheHash *ch, ZigPackage *pkg) {
@@ -9090,8 +9098,10 @@ static Error check_cache(CodeGen *g, Buf *manifest_dir, Buf *digest) {
cache_list_of_file(ch, g->link_objects.items, g->link_objects.length);
buf_resize(digest, 0);
if ((err = cache_hit(ch, digest)))
return err;
if ((err = cache_hit(ch, digest))) {
if (err != ErrorInvalidFormat)
return err;
}
if (ch->manifest_file_path != nullptr) {
g->caches_to_release.append(ch);