#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
struct message_queue {
struct list_head list;
if (phys_bytes == 0)
goto default_size;
return phys_bytes;
-#else
+#elif defined(_SC_PAGESIZE) && defined(_SC_PHYS_PAGES)
long page_size = sysconf(_SC_PAGESIZE);
long num_pages = sysconf(_SC_PHYS_PAGES);
if (page_size <= 0 || num_pages <= 0)
goto default_size;
return ((u64)page_size * (u64)num_pages);
+#else
+ int mib[2] = {CTL_HW, HW_MEMSIZE};
+ u64 memsize;
+ size_t len = sizeof(memsize);
+ if (sysctl(mib, ARRAY_LEN(mib), &memsize, &len, NULL, 0) < 0 || len != 8)
+ goto default_size;
+ return memsize;
#endif
default_size:
desired_num_threads = num_threads;
- chunks_per_msg = MAX_CHUNKS_PER_MSG;
- msgs_per_thread = 2;
+ if (out_chunk_size < ((u32)1 << 23)) {
+ chunks_per_msg = MAX_CHUNKS_PER_MSG;
+ msgs_per_thread = 2;
+ } else {
+ /* Big chunks: Just have one buffer per thread --- more would
+ * just waste memory. */
+ chunks_per_msg = 1;
+ msgs_per_thread = 1;
+ }
for (;;) {
approx_mem_required =
(u64)chunks_per_msg *
(u64)msgs_per_thread *
(u64)num_threads *
(u64)out_chunk_size
+ + out_chunk_size
+ 1000000
- + (out_chunk_size * num_threads * 4);
+ + num_threads * wimlib_get_compressor_needed_memory(out_ctype,
+ out_chunk_size,
+ NULL);
if (approx_mem_required <= max_memory)
break;