ogl_beamforming

Commit: cbf1047d3a28cb99b788b5b607bcccd218328d93
Parent: 80bfc2a08168a5e12ff2ce852ba74540f0a5460c
Author: Randy Palamar
Date:   Thu,  5 Sep 2024 09:39:47 -0600

use filesize as well as timestamp for hot reloading

Until I decide to implement a background file watch this plays a
little nicer with glibc. I don't think its possible to make an
executable file smaller than 32 bytes since this is the size of a
32 Bit ELF header (PE headers on win32 are bigger).

Diffstat:
M
main.c
 | 
15
++++-----------

1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/main.c b/main.c
@@ -20,23 +20,16 @@ static os_library_handle libhandle;
 typedef void do_beamformer_fn(BeamformerCtx *, Arena);
 static do_beamformer_fn *do_beamformer;
 
-static os_filetime
-get_filetime(char *name)
-{
-	os_file_stats fstats = os_get_file_stats(name);
-	return fstats.timestamp;
-}
-
 static void
 do_debug(void)
 {
 	static os_filetime updated_time;
-	os_filetime test_time = get_filetime(OS_DEBUG_LIB_NAME);
-	if (os_filetime_is_newer(test_time, updated_time)) {
+	os_file_stats test_stats = os_get_file_stats(OS_DEBUG_LIB_NAME);
+	if (test_stats.filesize > 32 && os_filetime_is_newer(test_stats.timestamp, updated_time)) {
 		os_unload_library(libhandle);
 		libhandle     = os_load_library(OS_DEBUG_LIB_NAME, OS_DEBUG_LIB_TEMP_NAME);
 		do_beamformer = os_lookup_dynamic_symbol(libhandle, "do_beamformer");
-		updated_time  = test_time;
+		updated_time  = test_stats.timestamp;
 	}
 }
 
@@ -141,7 +134,7 @@ static void
 check_and_load_cuda_lib(CudaLib *cl)
 {
 	os_file_stats current = os_get_file_stats(OS_CUDA_LIB_NAME);
-	if (!os_filetime_is_newer(current.timestamp, cl->timestamp))
+	if (!os_filetime_is_newer(current.timestamp, cl->timestamp) || current.filesize < 32)
 		return;
 
 	TraceLog(LOG_INFO, "Loading CUDA lib: %s", OS_CUDA_LIB_NAME);