gecko/xpcom/base/nsMemoryReporterManager.cpp
2011-08-18 15:46:39 +02:00

785 lines
23 KiB
C++

/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* mozilla.org
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsServiceManagerUtils.h"
#include "nsMemoryReporterManager.h"
#include "nsArrayEnumerator.h"
#include "nsISimpleEnumerator.h"
#if defined(XP_LINUX) || defined(XP_MACOSX)
#include <sys/time.h>
#include <sys/resource.h>
static PRInt64 GetHardPageFaults()
{
struct rusage usage;
int err = getrusage(RUSAGE_SELF, &usage);
if (err != 0) {
return PRInt64(-1);
}
return usage.ru_majflt;
}
static PRInt64 GetSoftPageFaults()
{
struct rusage usage;
int err = getrusage(RUSAGE_SELF, &usage);
if (err != 0) {
return PRInt64(-1);
}
return usage.ru_minflt;
}
#endif
#if defined(XP_LINUX)
#include <unistd.h>
static PRInt64 GetProcSelfStatmField(int n)
{
// There are more than two fields, but we're only interested in the first
// two.
static const int MAX_FIELD = 2;
size_t fields[MAX_FIELD];
NS_ASSERTION(n < MAX_FIELD, "bad field number");
FILE *f = fopen("/proc/self/statm", "r");
if (f) {
int nread = fscanf(f, "%lu %lu", &fields[0], &fields[1]);
fclose(f);
return (PRInt64) ((nread == MAX_FIELD) ? fields[n]*getpagesize() : -1);
}
return (PRInt64) -1;
}
static PRInt64 GetVsize()
{
return GetProcSelfStatmField(0);
}
static PRInt64 GetResident()
{
return GetProcSelfStatmField(1);
}
#elif defined(XP_MACOSX)
#include <mach/mach_init.h>
#include <mach/task.h>
static bool GetTaskBasicInfo(struct task_basic_info *ti)
{
mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;
kern_return_t kr = task_info(mach_task_self(), TASK_BASIC_INFO,
(task_info_t)ti, &count);
return kr == KERN_SUCCESS;
}
// The VSIZE figure on Mac includes huge amounts of shared memory and is always
// absurdly high, eg. 2GB+ even at start-up. But both 'top' and 'ps' report
// it, so we might as well too.
static PRInt64 GetVsize()
{
task_basic_info ti;
return (PRInt64) (GetTaskBasicInfo(&ti) ? ti.virtual_size : -1);
}
static PRInt64 GetResident()
{
task_basic_info ti;
return (PRInt64) (GetTaskBasicInfo(&ti) ? ti.resident_size : -1);
}
#elif defined(XP_WIN)
#include <windows.h>
#include <psapi.h>
static PRInt64 GetVsize()
{
MEMORYSTATUSEX s;
s.dwLength = sizeof(s);
bool success = GlobalMemoryStatusEx(&s);
if (!success)
return -1;
return s.ullTotalVirtual - s.ullAvailVirtual;
}
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
static PRInt64 GetPrivate()
{
PROCESS_MEMORY_COUNTERS_EX pmcex;
pmcex.cb = sizeof(PROCESS_MEMORY_COUNTERS_EX);
if (!GetProcessMemoryInfo(GetCurrentProcess(),
(PPROCESS_MEMORY_COUNTERS) &pmcex, sizeof(pmcex)))
return (PRInt64) -1;
return pmcex.PrivateUsage;
}
NS_MEMORY_REPORTER_IMPLEMENT(Private,
"private",
KIND_OTHER,
UNITS_BYTES,
GetPrivate,
"Memory that cannot be shared with other processes, including memory that "
"is committed and marked MEM_PRIVATE, data that is not mapped, and "
"executable pages that have been written to.")
#endif
static PRInt64 GetResident()
{
PROCESS_MEMORY_COUNTERS pmc;
pmc.cb = sizeof(PROCESS_MEMORY_COUNTERS);
if (!GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc)))
return (PRInt64) -1;
return pmc.WorkingSetSize;
}
#else
static PRInt64 GetResident()
{
return (PRInt64) -1;
}
#endif
#if defined(XP_LINUX) || defined(XP_MACOSX) || defined(XP_WIN)
NS_MEMORY_REPORTER_IMPLEMENT(Vsize,
"vsize",
KIND_OTHER,
UNITS_BYTES,
GetVsize,
"Memory mapped by the process, including code and data segments, the "
"heap, thread stacks, memory explicitly mapped by the process via mmap "
"and similar operations, and memory shared with other processes. "
"This is the vsize figure as reported by 'top' and 'ps'. This figure is of "
"limited use on Mac, where processes share huge amounts of memory with one "
"another. But even on other operating systems, 'resident' is a much better "
"measure of the memory resources used by the process.")
#endif
#if defined(XP_LINUX) || defined(XP_MACOSX)
NS_MEMORY_REPORTER_IMPLEMENT(PageFaultsSoft,
"page-faults-soft",
KIND_OTHER,
UNITS_COUNT_CUMULATIVE,
GetSoftPageFaults,
"The number of soft page faults (also known as \"minor page faults\") that "
"have occurred since the process started. A soft page fault occurs when the "
"process tries to access a page which is present in physical memory but is "
"not mapped into the process's address space. For instance, a process might "
"observe soft page faults when it loads a shared library which is already "
"present in physical memory. A process may experience many thousands of soft "
"page faults even when the machine has plenty of available physical memory, "
"and because the OS services a soft page fault without accessing the disk, "
"they impact performance much less than hard page faults.")
NS_MEMORY_REPORTER_IMPLEMENT(PageFaultsHard,
"page-faults-hard",
KIND_OTHER,
UNITS_COUNT_CUMULATIVE,
GetHardPageFaults,
"The number of hard page faults (also known as \"major page faults\") that "
"have occurred since the process started. A hard page fault occurs when a "
"process tries to access a page which is not present in physical memory. "
"The operating system must access the disk in order to fulfill a hard page "
"fault. When memory is plentiful, you should see very few hard page faults. "
"But if the process tries to use more memory than your machine has "
"available, you may see many thousands of hard page faults. Because "
"accessing the disk is up to a million times slower than accessing RAM, "
"the program may run very slowly when it is experiencing more than 100 or "
"so hard page faults a second.")
#endif
NS_MEMORY_REPORTER_IMPLEMENT(Resident,
"resident",
KIND_OTHER,
UNITS_BYTES,
GetResident,
"Memory mapped by the process that is present in physical memory, "
"also known as the resident set size (RSS). This is the best single "
"figure to use when considering the memory resources used by the process, "
"but it depends both on other processes being run and details of the OS "
"kernel and so is best used for comparing the memory usage of a single "
"process at different points in time.")
/**
** memory reporter implementation for jemalloc and OSX malloc,
** to obtain info on total memory in use (that we know about,
** at least -- on OSX, there are sometimes other zones in use).
**/
#if defined(MOZ_MEMORY)
# if defined(XP_WIN) || defined(SOLARIS) || defined(ANDROID) || defined(XP_MACOSX)
# define HAVE_JEMALLOC_STATS 1
# include "jemalloc.h"
# elif defined(XP_LINUX)
# define HAVE_JEMALLOC_STATS 1
# include "jemalloc_types.h"
// jemalloc is directly linked into firefox-bin; libxul doesn't link
// with it. So if we tried to use jemalloc_stats directly here, it
// wouldn't be defined. Instead, we don't include the jemalloc header
// and weakly link against jemalloc_stats.
extern "C" {
extern void jemalloc_stats(jemalloc_stats_t* stats)
NS_VISIBILITY_DEFAULT __attribute__((weak));
}
# endif // XP_LINUX
#endif // MOZ_MEMORY
#if HAVE_JEMALLOC_STATS
static PRInt64 GetHeapUnallocated()
{
jemalloc_stats_t stats;
jemalloc_stats(&stats);
return (PRInt64) stats.mapped - stats.allocated;
}
static PRInt64 GetHeapAllocated()
{
jemalloc_stats_t stats;
jemalloc_stats(&stats);
return (PRInt64) stats.allocated;
}
static PRInt64 GetHeapCommitted()
{
jemalloc_stats_t stats;
jemalloc_stats(&stats);
return (PRInt64) stats.committed;
}
static PRInt64 GetHeapDirty()
{
jemalloc_stats_t stats;
jemalloc_stats(&stats);
return (PRInt64) stats.dirty;
}
NS_MEMORY_REPORTER_IMPLEMENT(HeapCommitted,
"heap-committed",
KIND_OTHER,
UNITS_BYTES,
GetHeapCommitted,
"This number reported only for completeness; it is not particularly "
"meaningful. On Windows, all mapped memory is committed (because jemalloc's "
"MALLOC_DECOMMIT flag is set). Thus heap-committed should equal "
"heap-allocated + heap-unallocated. Elsewhere, jemalloc uses "
"madvise(DONT_NEED) to instruct the OS to drop the physical memory backing "
"pages the allocator doesn't need. In this case, jemalloc counts the memory "
"as 'committed', but it's not taking up any space in physical memory or in "
"the swap file.")
NS_MEMORY_REPORTER_IMPLEMENT(HeapDirty,
"heap-dirty",
KIND_OTHER,
UNITS_BYTES,
GetHeapDirty,
"Memory mapped by the heap allocator that was once part of an allocation "
"but which is now not allocated to the application. Since the application "
"may have modified the memory while it was allocated, we count this memory "
"as \"committed\", that is, as taking up space in physical memory or the "
"swap file. If memory is fragmented, and the allocator is unable to return "
"some mostly-free pages to the operating system because they contain a few "
"live objects, you might see a large value here. But even in the absence "
"of fragmentation, the allocator might not return some dirty memory to the "
"OS as an optimization, under the assumption that the application will need "
"the memory again soon.")
#elif defined(XP_MACOSX) && !defined(MOZ_MEMORY)
#include <malloc/malloc.h>
static PRInt64 GetHeapUnallocated()
{
struct mstats stats = mstats();
return (PRInt64) (stats.bytes_total - stats.bytes_used);
}
static PRInt64 GetHeapAllocated()
{
struct mstats stats = mstats();
return (PRInt64) stats.bytes_used;
}
static PRInt64 GetHeapZone0Committed()
{
malloc_statistics_t stats;
malloc_zone_statistics(malloc_default_zone(), &stats);
return stats.size_in_use;
}
static PRInt64 GetHeapZone0Used()
{
malloc_statistics_t stats;
malloc_zone_statistics(malloc_default_zone(), &stats);
return stats.size_allocated;
}
NS_MEMORY_REPORTER_IMPLEMENT(HeapZone0Committed,
"heap-zone0-committed",
KIND_OTHER,
UNITS_BYTES,
GetHeapZone0Committed,
"Memory mapped by the heap allocator that is committed in the default "
"zone.")
NS_MEMORY_REPORTER_IMPLEMENT(HeapZone0Used,
"heap-zone0-used",
KIND_OTHER,
UNITS_BYTES,
GetHeapZone0Used,
"Memory mapped by the heap allocator in the default zone that is "
"allocated to the application.")
#else
static PRInt64 GetHeapAllocated()
{
return (PRInt64) -1;
}
static PRInt64 GetHeapUnallocated()
{
return (PRInt64) -1;
}
#endif
NS_MEMORY_REPORTER_IMPLEMENT(HeapUnallocated,
"heap-unallocated",
KIND_OTHER,
UNITS_BYTES,
GetHeapUnallocated,
"Memory mapped by the heap allocator that is not part of an active "
"allocation. Much of this memory may be uncommitted -- that is, it does not "
"take up space in physical memory or in the swap file. Committed and "
"unallocated memory, perhaps a result of fragmentation, is reported in "
"heap-dirty, if that measure is available.")
NS_MEMORY_REPORTER_IMPLEMENT(HeapAllocated,
"heap-allocated",
KIND_OTHER,
UNITS_BYTES,
GetHeapAllocated,
"Memory mapped by the heap allocator that is currently allocated to the "
"application. This may exceed the amount of memory requested by the "
"application because the allocator regularly rounds up request sizes. (The "
"exact amount requested is not recorded.)")
/**
** nsMemoryReporterManager implementation
**/
NS_IMPL_THREADSAFE_ISUPPORTS1(nsMemoryReporterManager, nsIMemoryReporterManager)
NS_IMETHODIMP
nsMemoryReporterManager::Init()
{
#if HAVE_JEMALLOC_STATS && defined(XP_LINUX)
if (!jemalloc_stats)
return NS_ERROR_FAILURE;
#endif
#define REGISTER(_x) RegisterReporter(new NS_MEMORY_REPORTER_NAME(_x))
REGISTER(HeapAllocated);
REGISTER(HeapUnallocated);
REGISTER(Resident);
#if defined(XP_LINUX) || defined(XP_MACOSX) || defined(XP_WIN)
REGISTER(Vsize);
#endif
#if defined(XP_LINUX) || defined(XP_MACOSX)
REGISTER(PageFaultsSoft);
REGISTER(PageFaultsHard);
#endif
#if defined(XP_WIN) && MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
REGISTER(Private);
#endif
#if defined(HAVE_JEMALLOC_STATS)
REGISTER(HeapCommitted);
REGISTER(HeapDirty);
#elif defined(XP_MACOSX) && !defined(MOZ_MEMORY)
REGISTER(HeapZone0Committed);
REGISTER(HeapZone0Used);
#endif
return NS_OK;
}
nsMemoryReporterManager::nsMemoryReporterManager()
: mMutex("nsMemoryReporterManager::mMutex")
{
}
nsMemoryReporterManager::~nsMemoryReporterManager()
{
}
NS_IMETHODIMP
nsMemoryReporterManager::EnumerateReporters(nsISimpleEnumerator **result)
{
nsresult rv;
mozilla::MutexAutoLock autoLock(mMutex);
rv = NS_NewArrayEnumerator(result, mReporters);
return rv;
}
NS_IMETHODIMP
nsMemoryReporterManager::EnumerateMultiReporters(nsISimpleEnumerator **result)
{
nsresult rv;
mozilla::MutexAutoLock autoLock(mMutex);
rv = NS_NewArrayEnumerator(result, mMultiReporters);
return rv;
}
NS_IMETHODIMP
nsMemoryReporterManager::RegisterReporter(nsIMemoryReporter *reporter)
{
mozilla::MutexAutoLock autoLock(mMutex);
if (mReporters.IndexOf(reporter) != -1)
return NS_ERROR_FAILURE;
mReporters.AppendObject(reporter);
return NS_OK;
}
NS_IMETHODIMP
nsMemoryReporterManager::RegisterMultiReporter(nsIMemoryMultiReporter *reporter)
{
mozilla::MutexAutoLock autoLock(mMutex);
if (mMultiReporters.IndexOf(reporter) != -1)
return NS_ERROR_FAILURE;
mMultiReporters.AppendObject(reporter);
return NS_OK;
}
NS_IMETHODIMP
nsMemoryReporterManager::UnregisterReporter(nsIMemoryReporter *reporter)
{
mozilla::MutexAutoLock autoLock(mMutex);
if (!mReporters.RemoveObject(reporter))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsMemoryReporterManager::UnregisterMultiReporter(nsIMemoryMultiReporter *reporter)
{
mozilla::MutexAutoLock autoLock(mMutex);
if (!mMultiReporters.RemoveObject(reporter))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsMemoryReporterManager::GetResident(PRInt64 *aResident)
{
*aResident = ::GetResident();
return NS_OK;
}
struct MemoryReport {
MemoryReport(const nsACString &path, PRInt64 amount)
: path(path), amount(amount)
{
MOZ_COUNT_CTOR(MemoryReport);
}
MemoryReport(const MemoryReport& rhs)
: path(rhs.path), amount(rhs.amount)
{
MOZ_COUNT_CTOR(MemoryReport);
}
~MemoryReport()
{
MOZ_COUNT_DTOR(MemoryReport);
}
const nsCString path;
PRInt64 amount;
};
// This is just a wrapper for InfallibleTArray<MemoryReport> that implements
// nsISupports, so it can be passed to nsIMemoryMultiReporter::CollectReports.
class MemoryReportsWrapper : public nsISupports {
public:
NS_DECL_ISUPPORTS
MemoryReportsWrapper(InfallibleTArray<MemoryReport> *r) : mReports(r) { }
InfallibleTArray<MemoryReport> *mReports;
};
NS_IMPL_ISUPPORTS0(MemoryReportsWrapper)
class MemoryReportCallback : public nsIMemoryMultiReporterCallback
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Callback(const nsACString &aProcess, const nsACString &aPath,
PRInt32 aKind, PRInt32 aUnits, PRInt64 aAmount,
const nsACString &aDescription,
nsISupports *aWrappedMRs)
{
if (aKind == nsIMemoryReporter::KIND_NONHEAP && aAmount != PRInt64(-1)) {
MemoryReportsWrapper *wrappedMRs =
static_cast<MemoryReportsWrapper *>(aWrappedMRs);
MemoryReport mr(aPath, aAmount);
wrappedMRs->mReports->AppendElement(mr);
}
return NS_OK;
}
};
NS_IMPL_ISUPPORTS1(
MemoryReportCallback
, nsIMemoryMultiReporterCallback
)
// Is path1 a prefix, and thus a parent, of path2? Eg. "a/b" is a parent of
// "a/b/c", but "a/bb" is not.
static bool
isParent(const nsACString &path1, const nsACString &path2)
{
if (path1.Length() >= path2.Length())
return false;
const nsACString& subStr = Substring(path2, 0, path1.Length());
return subStr.Equals(path1) && path2[path1.Length()] == '/';
}
NS_IMETHODIMP
nsMemoryReporterManager::GetExplicit(PRInt64 *aExplicit)
{
InfallibleTArray<MemoryReport> nonheap;
PRInt64 heapUsed = PRInt64(-1);
// Get "heap-allocated" and all the KIND_NONHEAP measurements from vanilla
// reporters.
nsCOMPtr<nsISimpleEnumerator> e;
EnumerateReporters(getter_AddRefs(e));
PRBool more;
while (NS_SUCCEEDED(e->HasMoreElements(&more)) && more) {
nsCOMPtr<nsIMemoryReporter> r;
e->GetNext(getter_AddRefs(r));
PRInt32 kind;
nsresult rv = r->GetKind(&kind);
NS_ENSURE_SUCCESS(rv, rv);
if (kind == nsIMemoryReporter::KIND_NONHEAP) {
nsCString path;
rv = r->GetPath(path);
NS_ENSURE_SUCCESS(rv, rv);
PRInt64 amount;
rv = r->GetAmount(&amount);
NS_ENSURE_SUCCESS(rv, rv);
// Just skip any NONHEAP reporters that fail, because
// "heap-allocated" is the most important one.
if (amount != PRInt64(-1)) {
MemoryReport mr(path, amount);
nonheap.AppendElement(mr);
}
} else {
nsCString path;
rv = r->GetPath(path);
NS_ENSURE_SUCCESS(rv, rv);
if (path.Equals("heap-allocated")) {
rv = r->GetAmount(&heapUsed);
NS_ENSURE_SUCCESS(rv, rv);
// If "heap-allocated" fails, we give up, because the result
// would be horribly inaccurate.
if (heapUsed == PRInt64(-1)) {
*aExplicit = PRInt64(-1);
return NS_OK;
}
}
}
}
// Get KIND_NONHEAP measurements from multi-reporters, too.
nsCOMPtr<nsISimpleEnumerator> e2;
EnumerateMultiReporters(getter_AddRefs(e2));
nsRefPtr<MemoryReportsWrapper> wrappedMRs =
new MemoryReportsWrapper(&nonheap);
nsRefPtr<MemoryReportCallback> cb = new MemoryReportCallback();
while (NS_SUCCEEDED(e2->HasMoreElements(&more)) && more) {
nsCOMPtr<nsIMemoryMultiReporter> r;
e2->GetNext(getter_AddRefs(r));
r->CollectReports(cb, wrappedMRs);
}
// Ignore (by zeroing its amount) any reporter that is a child of another
// reporter. Eg. if we have "explicit/a" and "explicit/a/b", zero the
// latter. This is quadratic in the number of NONHEAP reporters, but there
// shouldn't be many.
for (PRUint32 i = 0; i < nonheap.Length(); i++) {
const nsCString &iPath = nonheap[i].path;
for (PRUint32 j = i + 1; j < nonheap.Length(); j++) {
const nsCString &jPath = nonheap[j].path;
if (isParent(iPath, jPath)) {
nonheap[j].amount = 0;
} else if (isParent(jPath, iPath)) {
nonheap[i].amount = 0;
}
}
}
// Sum all the nonheap reporters and heapUsed.
*aExplicit = heapUsed;
for (PRUint32 i = 0; i < nonheap.Length(); i++) {
*aExplicit += nonheap[i].amount;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS1(nsMemoryReporter, nsIMemoryReporter)
nsMemoryReporter::nsMemoryReporter(nsACString& process,
nsACString& path,
PRInt32 kind,
PRInt32 units,
PRInt64 amount,
nsACString& desc)
: mProcess(process)
, mPath(path)
, mKind(kind)
, mUnits(units)
, mAmount(amount)
, mDesc(desc)
{
}
nsMemoryReporter::~nsMemoryReporter()
{
}
NS_IMETHODIMP nsMemoryReporter::GetProcess(nsACString &aProcess)
{
aProcess.Assign(mProcess);
return NS_OK;
}
NS_IMETHODIMP nsMemoryReporter::GetPath(nsACString &aPath)
{
aPath.Assign(mPath);
return NS_OK;
}
NS_IMETHODIMP nsMemoryReporter::GetKind(PRInt32 *aKind)
{
*aKind = mKind;
return NS_OK;
}
NS_IMETHODIMP nsMemoryReporter::GetUnits(PRInt32 *aUnits)
{
*aUnits = mUnits;
return NS_OK;
}
NS_IMETHODIMP nsMemoryReporter::GetAmount(PRInt64 *aAmount)
{
*aAmount = mAmount;
return NS_OK;
}
NS_IMETHODIMP nsMemoryReporter::GetDescription(nsACString &aDescription)
{
aDescription.Assign(mDesc);
return NS_OK;
}
nsresult
NS_RegisterMemoryReporter (nsIMemoryReporter *reporter)
{
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
if (mgr == nsnull)
return NS_ERROR_FAILURE;
return mgr->RegisterReporter(reporter);
}
nsresult
NS_RegisterMemoryMultiReporter (nsIMemoryMultiReporter *reporter)
{
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
if (mgr == nsnull)
return NS_ERROR_FAILURE;
return mgr->RegisterMultiReporter(reporter);
}
nsresult
NS_UnregisterMemoryReporter (nsIMemoryReporter *reporter)
{
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
if (mgr == nsnull)
return NS_ERROR_FAILURE;
return mgr->UnregisterReporter(reporter);
}
nsresult
NS_UnregisterMemoryMultiReporter (nsIMemoryMultiReporter *reporter)
{
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
if (mgr == nsnull)
return NS_ERROR_FAILURE;
return mgr->UnregisterMultiReporter(reporter);
}