gecko-dev/xpcom/tests/TestHashtables.cpp

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C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsTHashtable.h"
#include "nsBaseHashtable.h"
#include "nsDataHashtable.h"
#include "nsInterfaceHashtable.h"
#include "nsClassHashtable.h"
#include "nsCOMPtr.h"
#include "nsISupports.h"
#include "nsCOMArray.h"
#include "mozilla/Attributes.h"
#include <stdio.h>
namespace TestHashtables {
class TestUniChar // for nsClassHashtable
{
public:
explicit TestUniChar(uint32_t aWord)
{
printf(" TestUniChar::TestUniChar() %u\n", aWord);
mWord = aWord;
}
~TestUniChar()
{
printf(" TestUniChar::~TestUniChar() %u\n", mWord);
}
uint32_t GetChar() const { return mWord; }
private:
uint32_t mWord;
};
struct EntityNode {
const char* mStr; // never owns buffer
uint32_t mUnicode;
};
EntityNode gEntities[] = {
{"nbsp",160},
{"iexcl",161},
{"cent",162},
{"pound",163},
{"curren",164},
{"yen",165},
{"brvbar",166},
{"sect",167},
{"uml",168},
{"copy",169},
{"ordf",170},
{"laquo",171},
{"not",172},
{"shy",173},
{"reg",174},
{"macr",175}
};
#define ENTITY_COUNT (unsigned(sizeof(gEntities)/sizeof(EntityNode)))
class EntityToUnicodeEntry : public PLDHashEntryHdr
{
public:
typedef const char* KeyType;
typedef const char* KeyTypePointer;
explicit EntityToUnicodeEntry(const char* aKey) { mNode = nullptr; }
EntityToUnicodeEntry(const EntityToUnicodeEntry& aEntry) { mNode = aEntry.mNode; }
~EntityToUnicodeEntry() { }
bool KeyEquals(const char* aEntity) const { return !strcmp(mNode->mStr, aEntity); }
static const char* KeyToPointer(const char* aEntity) { return aEntity; }
static PLDHashNumber HashKey(const char* aEntity) { return mozilla::HashString(aEntity); }
enum { ALLOW_MEMMOVE = true };
const EntityNode* mNode;
};
static uint32_t
nsTIterPrint(nsTHashtable<EntityToUnicodeEntry>& hash)
{
uint32_t n = 0;
for (auto iter = hash.Iter(); !iter.Done(); iter.Next()) {
EntityToUnicodeEntry* entry = iter.Get();
printf(" enumerated \"%s\" = %u\n",
entry->mNode->mStr, entry->mNode->mUnicode);
n++;
}
return n;
}
static uint32_t
nsTIterPrintRemove(nsTHashtable<EntityToUnicodeEntry>& hash)
{
uint32_t n = 0;
for (auto iter = hash.Iter(); !iter.Done(); iter.Next()) {
EntityToUnicodeEntry* entry = iter.Get();
printf(" enumerated \"%s\" = %u\n",
entry->mNode->mStr, entry->mNode->mUnicode);
iter.Remove();
n++;
}
return n;
}
void
testTHashtable(nsTHashtable<EntityToUnicodeEntry>& hash, uint32_t numEntries) {
printf("Filling hash with %d entries.\n", numEntries);
uint32_t i;
for (i = 0; i < numEntries; ++i) {
printf(" Putting entry \"%s\"...", gEntities[i].mStr);
EntityToUnicodeEntry* entry =
hash.PutEntry(gEntities[i].mStr);
if (!entry) {
printf("FAILED\n");
exit (2);
}
printf("OK...");
if (entry->mNode) {
printf("entry already exists!\n");
exit (3);
}
printf("\n");
entry->mNode = &gEntities[i];
}
printf("Testing Get:\n");
for (i = 0; i < numEntries; ++i) {
printf(" Getting entry \"%s\"...", gEntities[i].mStr);
EntityToUnicodeEntry* entry =
hash.GetEntry(gEntities[i].mStr);
if (!entry) {
printf("FAILED\n");
exit (4);
}
printf("Found %u\n", entry->mNode->mUnicode);
}
printf("Testing nonexistent entries...");
EntityToUnicodeEntry* entry =
hash.GetEntry("xxxy");
if (entry) {
printf("FOUND! BAD!\n");
exit (5);
}
printf("not found; good.\n");
printf("Enumerating:\n");
uint32_t count = nsTIterPrint(hash);
if (count != numEntries) {
printf(" Bad count!\n");
exit (6);
}
}
//
// all this nsIFoo stuff was copied wholesale from TestCOMPtr.cpp
//
#define NS_IFOO_IID \
{ 0x6f7652e0, 0xee43, 0x11d1, \
{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
class IFoo final : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
IFoo();
NS_IMETHOD_(MozExternalRefCountType) AddRef();
NS_IMETHOD_(MozExternalRefCountType) Release();
NS_IMETHOD QueryInterface( const nsIID&, void** );
NS_IMETHOD SetString(const nsACString& /*in*/ aString);
NS_IMETHOD GetString(nsACString& /*out*/ aString);
static void print_totals();
private:
~IFoo();
unsigned int refcount_;
static unsigned int total_constructions_;
static unsigned int total_destructions_;
nsCString mString;
};
NS_DEFINE_STATIC_IID_ACCESSOR(IFoo, NS_IFOO_IID)
unsigned int IFoo::total_constructions_;
unsigned int IFoo::total_destructions_;
void
IFoo::print_totals()
{
printf("total constructions/destructions --> %d/%d\n",
total_constructions_, total_destructions_);
}
IFoo::IFoo()
: refcount_(0)
{
++total_constructions_;
printf(" new IFoo@%p [#%d]\n",
static_cast<void*>(this), total_constructions_);
}
IFoo::~IFoo()
{
++total_destructions_;
printf("IFoo@%p::~IFoo() [#%d]\n",
static_cast<void*>(this), total_destructions_);
}
MozExternalRefCountType
IFoo::AddRef()
{
++refcount_;
printf("IFoo@%p::AddRef(), refcount --> %d\n",
static_cast<void*>(this), refcount_);
return refcount_;
}
MozExternalRefCountType
IFoo::Release()
{
int newcount = --refcount_;
if ( newcount == 0 )
printf(">>");
printf("IFoo@%p::Release(), refcount --> %d\n",
static_cast<void*>(this), refcount_);
if ( newcount == 0 )
{
printf(" delete IFoo@%p\n", static_cast<void*>(this));
printf("<<IFoo@%p::Release()\n", static_cast<void*>(this));
delete this;
}
return newcount;
}
nsresult
IFoo::QueryInterface( const nsIID& aIID, void** aResult )
{
printf("IFoo@%p::QueryInterface()\n", static_cast<void*>(this));
nsISupports* rawPtr = 0;
nsresult status = NS_OK;
if ( aIID.Equals(NS_GET_IID(IFoo)) )
rawPtr = this;
else
{
nsID iid_of_ISupports = NS_ISUPPORTS_IID;
if ( aIID.Equals(iid_of_ISupports) )
rawPtr = static_cast<nsISupports*>(this);
else
status = NS_ERROR_NO_INTERFACE;
}
NS_IF_ADDREF(rawPtr);
*aResult = rawPtr;
return status;
}
nsresult
IFoo::SetString(const nsACString& aString)
{
mString = aString;
return NS_OK;
}
nsresult
IFoo::GetString(nsACString& aString)
{
aString = mString;
return NS_OK;
}
nsresult
CreateIFoo( IFoo** result )
// a typical factory function (that calls AddRef)
{
printf(" >>CreateIFoo() --> ");
IFoo* foop = new IFoo();
printf("IFoo@%p\n", static_cast<void*>(foop));
foop->AddRef();
*result = foop;
printf("<<CreateIFoo()\n");
return NS_OK;
}
} // namespace TestHashtables
using namespace TestHashtables;
int
main(void) {
// check an nsTHashtable
printf("Initializing nsTHashtable...");
nsTHashtable<EntityToUnicodeEntry> EntityToUnicode(ENTITY_COUNT);
printf("OK\n");
printf("Partially filling nsTHashtable:\n");
testTHashtable(EntityToUnicode, 5);
printf("Enumerate-removing...\n");
uint32_t count = nsTIterPrintRemove(EntityToUnicode);
if (count != 5) {
printf("wrong count\n");
exit (7);
}
printf("OK\n");
printf("Check enumeration...");
count = nsTIterPrint(EntityToUnicode);
if (count != 0) {
printf("entries remain in table!\n");
exit (8);
}
printf("OK\n");
printf("Filling nsTHashtable:\n");
testTHashtable(EntityToUnicode, ENTITY_COUNT);
printf("Clearing...");
EntityToUnicode.Clear();
printf("OK\n");
printf("Check enumeration...");
count = nsTIterPrint(EntityToUnicode);
if (count != 0) {
printf("entries remain in table!\n");
exit (9);
}
printf("OK\n");
//
// now check a data-hashtable
//
printf("Initializing nsDataHashtable...");
nsDataHashtable<nsUint32HashKey,const char*> UniToEntity(ENTITY_COUNT);
printf("OK\n");
printf("Filling hash with %u entries.\n", ENTITY_COUNT);
uint32_t i;
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Putting entry %u...", gEntities[i].mUnicode);
UniToEntity.Put(gEntities[i].mUnicode, gEntities[i].mStr);
printf("OK...\n");
}
printf("Testing Get:\n");
const char* str;
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Getting entry %u...", gEntities[i].mUnicode);
if (!UniToEntity.Get(gEntities[i].mUnicode, &str)) {
printf("FAILED\n");
exit (12);
}
printf("Found %s\n", str);
}
printf("Testing nonexistent entries...");
if (UniToEntity.Get(99446, &str)) {
printf("FOUND! BAD!\n");
exit (13);
}
printf("not found; good.\n");
printf("Enumerating:\n");
count = 0;
for (auto iter = UniToEntity.Iter(); !iter.Done(); iter.Next()) {
printf(" enumerated %u = \"%s\"\n", iter.Key(), iter.UserData());
count++;
}
if (count != ENTITY_COUNT) {
printf(" Bad count!\n");
exit (14);
}
printf("Clearing...");
UniToEntity.Clear();
printf("OK\n");
printf("Checking count...");
count = 0;
for (auto iter = UniToEntity.Iter(); !iter.Done(); iter.Next()) {
printf(" enumerated %u = \"%s\"\n", iter.Key(), iter.Data());
count++;
}
if (count != 0) {
printf(" Clear did not remove all entries.\n");
exit (15);
}
printf("OK\n");
//
// now check a class-hashtable
//
printf("Initializing nsClassHashtable...");
nsClassHashtable<nsCStringHashKey,TestUniChar> EntToUniClass(ENTITY_COUNT);
printf("OK\n");
printf("Filling hash with %u entries.\n", ENTITY_COUNT);
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Putting entry %u...", gEntities[i].mUnicode);
TestUniChar* temp = new TestUniChar(gEntities[i].mUnicode);
EntToUniClass.Put(nsDependentCString(gEntities[i].mStr), temp);
printf("OK...\n");
}
printf("Testing Get:\n");
TestUniChar* myChar;
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Getting entry %s...", gEntities[i].mStr);
if (!EntToUniClass.Get(nsDependentCString(gEntities[i].mStr), &myChar)) {
printf("FAILED\n");
exit (18);
}
printf("Found %c\n", myChar->GetChar());
}
printf("Testing nonexistent entries...");
if (EntToUniClass.Get(NS_LITERAL_CSTRING("xxxx"), &myChar)) {
printf("FOUND! BAD!\n");
exit (19);
}
printf("not found; good.\n");
printf("Enumerating:\n");
count = 0;
for (auto iter = EntToUniClass.Iter(); !iter.Done(); iter.Next()) {
printf(" enumerated \"%s\" = %c\n",
PromiseFlatCString(iter.Key()).get(), iter.UserData()->GetChar());
count++;
}
if (count != ENTITY_COUNT) {
printf(" Bad count!\n");
exit (20);
}
printf("Clearing...\n");
EntToUniClass.Clear();
printf(" Clearing OK\n");
printf("Checking count...");
count = 0;
for (auto iter = EntToUniClass.Iter(); !iter.Done(); iter.Next()) {
printf(" enumerated \"%s\" = %c\n",
PromiseFlatCString(iter.Key()).get(), iter.Data()->GetChar());
count++;
}
if (count != 0) {
printf(" Clear did not remove all entries.\n");
exit (21);
}
printf("OK\n");
//
// now check a data-hashtable with an interface key
//
printf("Initializing nsDataHashtable with interface key...");
nsDataHashtable<nsISupportsHashKey,uint32_t> EntToUniClass2(ENTITY_COUNT);
printf("OK\n");
printf("Filling hash with %u entries.\n", ENTITY_COUNT);
nsCOMArray<IFoo> fooArray;
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Putting entry %u...", gEntities[i].mUnicode);
nsCOMPtr<IFoo> foo;
CreateIFoo(getter_AddRefs(foo));
foo->SetString(nsDependentCString(gEntities[i].mStr));
fooArray.InsertObjectAt(foo, i);
EntToUniClass2.Put(foo, gEntities[i].mUnicode);
printf("OK...\n");
}
printf("Testing Get:\n");
uint32_t myChar2;
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Getting entry %s...", gEntities[i].mStr);
if (!EntToUniClass2.Get(fooArray[i], &myChar2)) {
printf("FAILED\n");
exit (24);
}
printf("Found %c\n", myChar2);
}
printf("Testing nonexistent entries...");
if (EntToUniClass2.Get((nsISupports*) 0x55443316, &myChar2)) {
printf("FOUND! BAD!\n");
exit (25);
}
printf("not found; good.\n");
printf("Enumerating:\n");
count = 0;
for (auto iter = EntToUniClass2.Iter(); !iter.Done(); iter.Next()) {
nsAutoCString s;
nsCOMPtr<IFoo> foo = do_QueryInterface(iter.Key());
foo->GetString(s);
printf(" enumerated \"%s\" = %u\n", s.get(), iter.UserData());
count++;
}
if (count != ENTITY_COUNT) {
printf(" Bad count!\n");
exit (26);
}
printf("Clearing...\n");
EntToUniClass2.Clear();
printf(" Clearing OK\n");
printf("Checking count...");
count = 0;
for (auto iter = EntToUniClass2.Iter(); !iter.Done(); iter.Next()) {
nsAutoCString s;
nsCOMPtr<IFoo> foo = do_QueryInterface(iter.Key());
foo->GetString(s);
printf(" enumerated \"%s\" = %u\n", s.get(), iter.Data());
count++;
}
if (count != 0) {
printf(" Clear did not remove all entries.\n");
exit (27);
}
printf("OK\n");
//
// now check an interface-hashtable with an uint32_t key
//
printf("Initializing nsInterfaceHashtable...");
nsInterfaceHashtable<nsUint32HashKey,IFoo> UniToEntClass2(ENTITY_COUNT);
printf("OK\n");
printf("Filling hash with %u entries.\n", ENTITY_COUNT);
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Putting entry %u...", gEntities[i].mUnicode);
nsCOMPtr<IFoo> foo;
CreateIFoo(getter_AddRefs(foo));
foo->SetString(nsDependentCString(gEntities[i].mStr));
UniToEntClass2.Put(gEntities[i].mUnicode, foo);
printf("OK...\n");
}
printf("Testing Get:\n");
for (i = 0; i < ENTITY_COUNT; ++i) {
printf(" Getting entry %s...", gEntities[i].mStr);
nsCOMPtr<IFoo> myEnt;
if (!UniToEntClass2.Get(gEntities[i].mUnicode, getter_AddRefs(myEnt))) {
printf("FAILED\n");
exit (30);
}
nsAutoCString myEntStr;
myEnt->GetString(myEntStr);
printf("Found %s\n", myEntStr.get());
}
printf("Testing nonexistent entries...");
nsCOMPtr<IFoo> myEnt;
if (UniToEntClass2.Get(9462, getter_AddRefs(myEnt))) {
printf("FOUND! BAD!\n");
exit (31);
}
printf("not found; good.\n");
printf("Enumerating:\n");
count = 0;
for (auto iter = UniToEntClass2.Iter(); !iter.Done(); iter.Next()) {
nsAutoCString s;
iter.UserData()->GetString(s);
printf(" enumerated %u = \"%s\"\n", iter.Key(), s.get());
count++;
}
if (count != ENTITY_COUNT) {
printf(" Bad count!\n");
exit (32);
}
printf("Clearing...\n");
UniToEntClass2.Clear();
printf(" Clearing OK\n");
printf("Checking count...");
count = 0;
for (auto iter = UniToEntClass2.Iter(); !iter.Done(); iter.Next()) {
nsAutoCString s;
iter.Data()->GetString(s);
printf(" enumerated %u = \"%s\"\n", iter.Key(), s.get());
count++;
}
if (count != 0) {
printf(" Clear did not remove all entries.\n");
exit (33);
}
printf("OK\n");
return 0;
}