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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-11-10 11:39:27 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-11-10 11:39:27 +0100
commit974a481d12bf430891725bd3662876358e57e11a (patch)
treecad011151456251fef2f1b8d02ef4b4e45fad61a /js/src/gc/Memory.cpp
parent6bd66b1728eeddb058066edda740aaeb2ceaec23 (diff)
parent736d25cbec4541186ed46c935c117ce4d1c7f3bb (diff)
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Merge branch 'master' into js-modules
# Conflicts: # modules/libpref/init/all.js
Diffstat (limited to 'js/src/gc/Memory.cpp')
-rw-r--r--js/src/gc/Memory.cpp102
1 files changed, 14 insertions, 88 deletions
diff --git a/js/src/gc/Memory.cpp b/js/src/gc/Memory.cpp
index 26da75469..418984057 100644
--- a/js/src/gc/Memory.cpp
+++ b/js/src/gc/Memory.cpp
@@ -17,11 +17,6 @@
#include "jswin.h"
#include <psapi.h>
-#elif defined(SOLARIS)
-
-#include <sys/mman.h>
-#include <unistd.h>
-
#elif defined(XP_UNIX)
#include <algorithm>
@@ -408,86 +403,6 @@ DeallocateMappedContent(void* p, size_t length)
# endif
-#elif defined(SOLARIS)
-
-#ifndef MAP_NOSYNC
-# define MAP_NOSYNC 0
-#endif
-
-void
-InitMemorySubsystem()
-{
- if (pageSize == 0)
- pageSize = allocGranularity = size_t(sysconf(_SC_PAGESIZE));
-}
-
-void*
-MapAlignedPages(size_t size, size_t alignment)
-{
- MOZ_ASSERT(size >= alignment);
- MOZ_ASSERT(size >= allocGranularity);
- MOZ_ASSERT(size % alignment == 0);
- MOZ_ASSERT(size % pageSize == 0);
- MOZ_ASSERT_IF(alignment < allocGranularity, allocGranularity % alignment == 0);
- MOZ_ASSERT_IF(alignment > allocGranularity, alignment % allocGranularity == 0);
-
- int prot = PROT_READ | PROT_WRITE;
- int flags = MAP_PRIVATE | MAP_ANON | MAP_ALIGN | MAP_NOSYNC;
-
- void* p = mmap((caddr_t)alignment, size, prot, flags, -1, 0);
- if (p == MAP_FAILED)
- return nullptr;
- return p;
-}
-
-static void*
-MapAlignedPagesLastDitch(size_t size, size_t alignment)
-{
- return nullptr;
-}
-
-void
-UnmapPages(void* p, size_t size)
-{
- MOZ_ALWAYS_TRUE(0 == munmap((caddr_t)p, size));
-}
-
-bool
-MarkPagesUnused(void* p, size_t size)
-{
- MOZ_ASSERT(OffsetFromAligned(p, pageSize) == 0);
- return true;
-}
-
-bool
-MarkPagesInUse(void* p, size_t size)
-{
- if (!DecommitEnabled())
- return;
-
- MOZ_ASSERT(OffsetFromAligned(p, pageSize) == 0);
-}
-
-size_t
-GetPageFaultCount()
-{
- return 0;
-}
-
-void*
-AllocateMappedContent(int fd, size_t offset, size_t length, size_t alignment)
-{
- // Not implemented.
- return nullptr;
-}
-
-// Deallocate mapped memory for object.
-void
-DeallocateMappedContent(void* p, size_t length)
-{
- // Not implemented.
-}
-
#elif defined(XP_UNIX)
void
@@ -500,8 +415,15 @@ InitMemorySubsystem()
static inline void*
MapMemoryAt(void* desired, size_t length, int prot = PROT_READ | PROT_WRITE,
int flags = MAP_PRIVATE | MAP_ANON, int fd = -1, off_t offset = 0)
+
+// Solaris manages 64-bit address space in a different manner from every other
+// AMD64 operating system, but fortunately the fix is the same one
+// required for every operating system on 64-bit SPARC, Itanium, and ARM.
+// Most people's intuition failed them here and they thought this couldn't
+// possibly be correct on AMD64, but for Solaris/illumos it is.
+
{
-#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__)) || defined(__aarch64__)
+#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__)) || defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
MOZ_ASSERT((0xffff800000000000ULL & (uintptr_t(desired) + length - 1)) == 0);
#endif
void* region = mmap(desired, length, prot, flags, fd, offset);
@@ -551,7 +473,7 @@ MapMemory(size_t length, int prot = PROT_READ | PROT_WRITE,
return nullptr;
}
return region;
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
/*
* There might be similar virtual address issue on arm64 which depends on
* hardware and kernel configurations. But the work around is slightly
@@ -763,7 +685,11 @@ MarkPagesUnused(void* p, size_t size)
return false;
MOZ_ASSERT(OffsetFromAligned(p, pageSize) == 0);
- int result = madvise(p, size, MADV_DONTNEED);
+#ifdef XP_SOLARIS
+ int result = posix_madvise(p, size, POSIX_MADV_DONTNEED);
+#else
+ int result = madvise(p, size, MADV_DONTNEED);
+#endif
return result != -1;
}