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Landing XPCOM_M8_PERF_BRANCH. Speeding up GetString().

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git-svn-id: svn://10.0.0.236/trunk@38648 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
dp%netscape.com
1999-07-07 07:42:03 +00:00
parent 1de3f3dd0a
commit e3db628872
2 changed files with 116 additions and 76 deletions
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96
mozilla/xpcom/components/nsRegistry.cpp
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@@ -489,50 +489,70 @@ NS_IMETHODIMP nsRegistry::Close() {
------------------------------------------------------------------------------*/
NS_IMETHODIMP nsRegistry::GetString( Key baseKey, const char *path, char **result ) {
nsresult rv = NS_OK;
REGERR err = REGERR_OK;
// Make sure caller gave us place for result.
if( result ) {
*result = 0; // Clear result.
REGERR err = REGERR_OK;
// Get info about the requested entry.
uint32 type, length;
rv = GetValueType( baseKey, path, &type );
if ( rv == NS_OK ) {
rv = GetValueLength( baseKey, path, &length );
}
// Make sure caller gave us place for result.
if ( !result )
return NS_ERROR_NULL_POINTER;
char regStr[MAXREGPATHLEN];
// initialize the return value
*result = 0;
// Attempt to get string into our fixed buffer
PR_Lock(mregLock);
err = NR_RegGetEntryString( mReg,(RKEY)baseKey,(char*)path, regStr, sizeof regStr );
PR_Unlock(mregLock);
if ( err == REGERR_OK )
{
// Allocate buffer for return value
uint32 vallen = PL_strlen(regStr);
*result = (char*)PR_Malloc( vallen + 1 );
if (*result)
PL_strcpy(*result, regStr);
else
rv = NS_ERROR_OUT_OF_MEMORY;
}
else if ( err == REGERR_BUFTOOSMALL )
{
// find the real size and malloc it
uint32 length;
rv = GetValueLength( baseKey, path, &length );
// See if that worked.
if( rv == NS_OK ) {
// Make sure the entry is a string.
if( type == String ) {
// Allocate space for result.
*result =(char*)PR_Malloc( length + 1 );
if( *result ) {
// Get string from registry into result buffer.
PR_Lock(mregLock);
err = NR_RegGetEntryString( mReg,(RKEY)baseKey,(char*)path, *result, length+1 );
PR_Unlock(mregLock);
// Convert status.
rv = regerr2nsresult( err );
// Test result.
if( rv != NS_OK ) {
// Didn't get result, free buffer.
PR_Free( *result );
*result = 0;
}
} else {
// Couldn't allocate buffer.
rv = NS_ERROR_OUT_OF_MEMORY;
if( rv == NS_OK )
{
*result =(char*)PR_Malloc( length + 1 );
if( *result )
{
// Get string from registry into result buffer.
PR_Lock(mregLock);
err = NR_RegGetEntryString( mReg,(RKEY)baseKey,(char*)path, *result, length+1 );
PR_Unlock(mregLock);
// Convert status.
rv = regerr2nsresult( err );
if ( rv != NS_OK )
{
// Didn't get result, free buffer
PR_Free( *result );
*result = 0;
}
} else {
// They asked for the wrong type of value.
rv = regerr2nsresult( REGERR_BADTYPE );
}
else
{
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
} else {
rv = NS_ERROR_NULL_POINTER;
}
return rv;
else
{
// Convert status.
rv = regerr2nsresult( err );
}
return rv;
}
/*--------------------------- nsRegistry::SetString ----------------------------