Switch to 64bit timestamps in libc

Author: cchudant

src/library.js

@@ -397,21 +397,6 @@ LibraryManager.library = {
     return ((Date.now() - _clock.start) * ({{{ cDefine('CLOCKS_PER_SEC') }}} / 1000))|0;
   },
 
-  time__sig: 'ii',
-  time: function(ptr) {
-    {{{ from64('ptr') }}};
-    var ret = (Date.now()/1000)|0;
-    if (ptr) {
-      {{{ makeSetValue('ptr', 0, 'ret', 'i32') }}};
-    }
-    return ret;
-  },
-
-  difftime__sig: 'dii',
-  difftime: function(time1, time0) {
-    return time1 - time0;
-  },
-
   _mktime_js__sig: 'ii',
   _mktime_js: function(tmPtr) {
     var date = new Date({{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_year, 'i32') }}} + 1900,
@@ -1275,7 +1260,8 @@ LibraryManager.library = {
       setErrNo({{{ cDefine('EINVAL') }}});
       return -1;
     }
-    {{{ makeSetValue('tp', C_STRUCTS.timespec.tv_sec, '(now/1000)|0', 'i32') }}}; // seconds
+    // struct timespec { time_t tv_sec; long tv_nsec; };
+    {{{ makeSetValue('tp', C_STRUCTS.timespec.tv_sec, '(now/1000)|0', 'i64') }}}; // seconds
     {{{ makeSetValue('tp', C_STRUCTS.timespec.tv_nsec, '((now % 1000)*1000*1000)|0', 'i32') }}}; // nanoseconds
     return 0;
   },
@@ -1293,16 +1279,18 @@ LibraryManager.library = {
       setErrNo({{{ cDefine('EINVAL') }}});
       return -1;
     }
-    {{{ makeSetValue('res', C_STRUCTS.timespec.tv_sec, '(nsec/1000000000)|0', 'i32') }}};
+    // struct timespec { time_t tv_sec; long tv_nsec; };
+    {{{ makeSetValue('res', C_STRUCTS.timespec.tv_sec, '(nsec/1000000000)|0', 'i64') }}};
     {{{ makeSetValue('res', C_STRUCTS.timespec.tv_nsec, 'nsec', 'i32') }}} // resolution is nanoseconds
     return 0;
   },
   gettimeofday__sig: 'iii',
   // http://pubs.opengroup.org/onlinepubs/000095399/basedefs/sys/time.h.html
   gettimeofday: function(ptr) {
     var now = Date.now();
-    {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_sec, '(now/1000)|0', 'i32') }}}; // seconds
-    {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_usec, '((now % 1000)*1000)|0', 'i32') }}}; // microseconds
+    // struct timeval { time_t tv_sec; suseconds_t tv_usec; };
+    {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_sec, '(now/1000)|0', 'i64') }}}; // seconds
+    {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_usec, '((now % 1000)*1000)|0', 'i64') }}}; // microseconds
     return 0;
   },
 
@@ -1312,7 +1300,8 @@ LibraryManager.library = {
 
   ftime: function(p) {
     var millis = Date.now();
-    {{{ makeSetValue('p', C_STRUCTS.timeb.time, '(millis/1000)|0', 'i32') }}};
+    // struct timeb { time_t time; unsigned short millitm; short timezone; short dstflag; };
+    {{{ makeSetValue('p', C_STRUCTS.timeb.time, '(millis/1000)|0', 'i64') }}};
     {{{ makeSetValue('p', C_STRUCTS.timeb.millitm, 'millis % 1000', 'i16') }}};
     {{{ makeSetValue('p', C_STRUCTS.timeb.timezone, '0', 'i16') }}}; // Obsolete field
     {{{ makeSetValue('p', C_STRUCTS.timeb.dstflag, '0', 'i16') }}}; // Obsolete field

system/lib/libc/musl/arch/emscripten/bits/alltypes.h

@@ -78,12 +78,12 @@ typedef long double double_t;
 #endif
 
 #if defined(__NEED_time_t) && !defined(__DEFINED_time_t)
-typedef long time_t;
+typedef long long time_t;
 #define __DEFINED_time_t
 #endif
 
 #if defined(__NEED_suseconds_t) && !defined(__DEFINED_suseconds_t)
-typedef long suseconds_t;
+typedef long long suseconds_t;
 #define __DEFINED_suseconds_t
 #endif
 

system/lib/libc/musl/arch/emscripten/bits/alltypes.h.in

@@ -1,3 +1,4 @@
+#define _REDIR_TIME64 1
 #define _Addr __PTRDIFF_TYPE__
 #define _Int64 __INT64_TYPE__
 #define _Reg __PTRDIFF_TYPE__
@@ -14,8 +15,8 @@ TYPEDEF float float_t;
 TYPEDEF double double_t;
 
 TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
-TYPEDEF long time_t;
-TYPEDEF long suseconds_t;
+TYPEDEF long long time_t;
+TYPEDEF long long suseconds_t;
 
 TYPEDEF struct { union { int __i[10]; unsigned __s[10]; } __u; } pthread_attr_t;
 TYPEDEF struct { union { int __i[7]; void *__p[7]; } __u; } pthread_mutex_t;

tools/system_libs.py

@@ -908,6 +908,8 @@ def get_files(self):
           'ctime.c',
           'gmtime.c',
           'localtime.c',
+          'difftime.c',
+          'time.c',
           'nanosleep.c',
           'clock_nanosleep.c',
           'ctime_r.c',
@@ -1600,13 +1602,11 @@ def get_files(self):
                    '__year_to_secs.c',
                    'clock.c',
                    'clock_gettime.c',
-                   'difftime.c',
                    'gettimeofday.c',
                    'localtime_r.c',
                    'gmtime_r.c',
                    'mktime.c',
-                   'timegm.c',
-                   'time.c'])
+                   'timegm.c'])
     # It is more efficient to use JS for __assert_fail, as it avoids always
     # including fprintf etc.
     files += files_in_path(