Make some systemic improvements

- add vdso dump utility
- tests now log stack usage
- rename g_ftrace to __ftrace
- make internal spinlocks go faster
- add conformant c11 atomics library
- function tracing now logs stack usage
- make function call tracing thread safe
- add -X unsecure (no ssl) mode to redbean
- munmap() has more consistent behavior now
- pacify fsync() calls on python unit tests
- make --strace flag work better in redbean
- start minimizing and documenting compiler flags

third_party/dlmalloc/dlmalloc.c

@@ -20,7 +20,7 @@
 #include "third_party/dlmalloc/dlmalloc.h"
 // clang-format off
 
-#define FOOTERS 1
+#define FOOTERS 0
 #define MSPACES 0
 
 #define HAVE_MMAP 1
@@ -351,7 +351,7 @@ unsigned char _BitScanReverse(unsigned long *index, unsigned long mask);
 #    endif
 #  endif
 #  ifdef _SC_PAGE_SIZE
-#    define malloc_getpagesize sysconf(_SC_PAGE_SIZE)
+#    define malloc_getpagesize 4096 /*sysconf(_SC_PAGE_SIZE)*/
 #  else
 #    if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE)
        extern size_t getpagesize();
@@ -1514,7 +1514,10 @@ static int init_mparams(void) {
     size_t psize;
     size_t gsize;
 
-#ifndef WIN32
+#if defined(__COSMOPOLITAN__)
+    psize = 4096;
+    gsize = 65536;
+#elif !defined(WIN32)
     psize = malloc_getpagesize;
     gsize = ((DEFAULT_GRANULARITY != 0)? DEFAULT_GRANULARITY : psize);
 #else /* WIN32 */

third_party/dlmalloc/dlmalloc.mk

@@ -49,10 +49,17 @@ $(THIRD_PARTY_DLMALLOC_A).pkg:					\
 		$(THIRD_PARTY_DLMALLOC_A_OBJS)			\
 		$(foreach x,$(THIRD_PARTY_DLMALLOC_A_DIRECTDEPS),$($(x)_A).pkg)
 
-$(THIRD_PARTY_DLMALLOC_A_OBJS):					\
+# we can't use address sanitizer because:
+#   address sanitizer depends on dlmalloc
+o/$(MODE)/third_party/dlmalloc/dlmalloc.o:			\
 		OVERRIDE_CFLAGS +=				\
-			$(NO_MAGIC)				\
 			-ffreestanding				\
+			-fno-sanitize=address
+
+# we must segregate codegen because:
+#   file contains multiple independently linkable apis
+o/$(MODE)/third_party/dlmalloc/dlmalloc.greg.o:			\
+		OVERRIDE_CFLAGS +=				\
 			-ffunction-sections			\
 			-fdata-sections
 

third_party/dlmalloc/vespene.greg.c

@@ -33,7 +33,7 @@ void *dlmalloc_requires_more_vespene_gas(size_t size) {
   if ((p = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
                 -1, 0)) != MAP_FAILED) {
     if (weaken(__asan_poison)) {
-      weaken(__asan_poison)((uintptr_t)p, size, kAsanHeapFree);
+      weaken(__asan_poison)(p, size, kAsanHeapFree);
     }
   }
   return p;