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authorSverker Eriksson <[email protected]>2016-10-05 19:48:01 +0200
committerSverker Eriksson <[email protected]>2016-10-14 14:29:17 +0200
commite048ebf4bddf8434d0f4402863c0f6313a741df0 (patch)
treef1ebd8bda8c2cde3d172076c77a3b3603468a2da /erts/emulator/hipe
parentd9149ef5e2591d34ba781a08b1ae3e1823f7a13a (diff)
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erts: Fix old leak of sparc hipe code
Diffstat (limited to 'erts/emulator/hipe')
-rw-r--r--erts/emulator/hipe/hipe_sparc.c109
1 files changed, 11 insertions, 98 deletions
diff --git a/erts/emulator/hipe/hipe_sparc.c b/erts/emulator/hipe/hipe_sparc.c
index 23020f34ee..75bfb4fef1 100644
--- a/erts/emulator/hipe/hipe_sparc.c
+++ b/erts/emulator/hipe/hipe_sparc.c
@@ -24,7 +24,6 @@
#include "config.h"
#endif
#include "global.h"
-#include <sys/mman.h>
#include "hipe_arch.h"
#include "hipe_native_bif.h" /* nbif_callemu() */
@@ -97,105 +96,9 @@ int hipe_patch_call(void *callAddress, void *destAddress, void *trampoline)
return 0;
}
-/*
- * Memory allocator for executable code.
- *
- * This is required on x86 because some combinations
- * of Linux kernels and CPU generations default to
- * non-executable memory mappings, causing ordinary
- * malloc() memory to be non-executable.
- */
-static unsigned int code_bytes;
-static char *code_next;
-
-#if 0 /* change to non-zero to get allocation statistics at exit() */
-static unsigned int total_mapped, nr_joins, nr_splits, total_alloc, nr_allocs, nr_large, total_lost;
-static unsigned int atexit_done;
-
-static void alloc_code_stats(void)
-{
- printf("\r\nalloc_code_stats: %u bytes mapped, %u joins, %u splits, %u bytes allocated, %u average alloc, %u large allocs, %u bytes lost\r\n",
- total_mapped, nr_joins, nr_splits, total_alloc, nr_allocs ? total_alloc/nr_allocs : 0, nr_large, total_lost);
-}
-
-static void atexit_alloc_code_stats(void)
-{
- if (!atexit_done) {
- atexit_done = 1;
- (void)atexit(alloc_code_stats);
- }
-}
-
-#define ALLOC_CODE_STATS(X) do{X;}while(0)
-#else
-#define ALLOC_CODE_STATS(X) do{}while(0)
-#endif
-
-static int morecore(unsigned int alloc_bytes)
-{
- unsigned int map_bytes;
- char *map_hint, *map_start;
-
- /* Page-align the amount to allocate. */
- map_bytes = (alloc_bytes + 4095) & ~4095;
-
- /* Round up small allocations. */
- if (map_bytes < 1024*1024)
- map_bytes = 1024*1024;
- else
- ALLOC_CODE_STATS(++nr_large);
-
- /* Create a new memory mapping, ensuring it is executable
- and in the low 2GB of the address space. Also attempt
- to make it adjacent to the previous mapping. */
- map_hint = code_next + code_bytes;
- if ((unsigned long)map_hint & 4095)
- abort();
- map_start = mmap(map_hint, map_bytes,
- PROT_EXEC|PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_ANONYMOUS
-#ifdef __x86_64__
- |MAP_32BIT
-#endif
- ,
- -1, 0);
- if (map_start == MAP_FAILED)
- return -1;
-
- ALLOC_CODE_STATS(total_mapped += map_bytes);
-
- /* Merge adjacent mappings, so the trailing portion of the previous
- mapping isn't lost. In practice this is quite successful. */
- if (map_start == map_hint) {
- ALLOC_CODE_STATS(++nr_joins);
- code_bytes += map_bytes;
- } else {
- ALLOC_CODE_STATS(++nr_splits);
- ALLOC_CODE_STATS(total_lost += code_bytes);
- code_next = map_start;
- code_bytes = map_bytes;
- }
-
- ALLOC_CODE_STATS(atexit_alloc_code_stats());
-
- return 0;
-}
-
static void *alloc_code(unsigned int alloc_bytes)
{
- void *res;
-
- /* Align function entries. */
- alloc_bytes = (alloc_bytes + 3) & ~3;
-
- if (code_bytes < alloc_bytes && morecore(alloc_bytes) != 0)
- return NULL;
- ALLOC_CODE_STATS(++nr_allocs);
- ALLOC_CODE_STATS(total_alloc += alloc_bytes);
- res = code_next;
- code_next += alloc_bytes;
- code_bytes -= alloc_bytes;
- return res;
+ return erts_alloc(ERTS_ALC_T_HIPE_EXEC, alloc_bytes);
}
void *hipe_alloc_code(Uint nrbytes, Eterm callees, Eterm *trampolines, Process *p)
@@ -206,6 +109,11 @@ void *hipe_alloc_code(Uint nrbytes, Eterm callees, Eterm *trampolines, Process *
return alloc_code(nrbytes);
}
+void hipe_free_code(void* code, unsigned int nrbytes)
+{
+ erts_free(ERTS_ALC_T_HIPE_EXEC, code);
+}
+
void *hipe_make_native_stub(void *callee_exp, unsigned int beamArity)
{
unsigned int *code;
@@ -235,6 +143,11 @@ void *hipe_make_native_stub(void *callee_exp, unsigned int beamArity)
return code;
}
+void hipe_free_native_stub(void* stub)
+{
+ erts_free(ERTS_ALC_T_HIPE_EXEC, stub);
+}
+
void hipe_arch_print_pcb(struct hipe_process_state *p)
{
#define U(n,x) \