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Optimize immutability of codebase/domain a little bit. Bug 380475, r=dveditz, sr=biesi

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This commit is contained in:
bzbarsky@mit.edu 2007-06-18 08:07:02 -07:00
parent e9c47c9a9e
commit 5289e91a54
2 changed files with 33 additions and 2 deletions
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3
caps/include/nsPrincipal.h
View File

@ -141,6 +141,9 @@ protected:
nsCOMPtr<nsIURI> mOrigin;
PRPackedBool mTrusted;
PRPackedBool mInitialized;
// If mCodebaseImmutable is true, mCodebase is non-null and immutable
PRPackedBool mCodebaseImmutable;
PRPackedBool mDomainImmutable;
};

32
caps/src/nsPrincipal.cpp
View File

@ -57,6 +57,15 @@
#include "nsPrincipal.h"
static PRBool URIIsImmutable(nsIURI* aURI)
{
nsCOMPtr<nsIMutable> mutableObj(do_QueryInterface(aURI));
PRBool isMutable;
return
mutableObj &&
NS_SUCCEEDED(mutableObj->GetMutable(&isMutable)) &&
!isMutable;
}
// Static member variables
PRInt32 nsPrincipal::sCapabilitiesOrdinal = 0;
@ -97,7 +106,9 @@ nsPrincipal::nsPrincipal()
: mCapabilities(7),
mSecurityPolicy(nsnull),
mTrusted(PR_FALSE),
mInitialized(PR_FALSE)
mInitialized(PR_FALSE),
mCodebaseImmutable(PR_FALSE),
mDomainImmutable(PR_FALSE)
{
}
@ -113,7 +124,8 @@ nsPrincipal::Init(const nsACString& aCertFingerprint,
mInitialized = PR_TRUE;
mCodebase = aCodebase;
mCodebase = NS_TryToMakeImmutable(aCodebase);
mCodebaseImmutable = URIIsImmutable(mCodebase);
// Invalidate our cached origin
mOrigin = nsnull;
@ -514,6 +526,11 @@ nsPrincipal::GetHasCertificate(PRBool* aResult)
NS_IMETHODIMP
nsPrincipal::GetURI(nsIURI** aURI)
{
if (mCodebaseImmutable) {
NS_ADDREF(*aURI = mCodebase);
return NS_OK;
}
if (!mCodebase) {
*aURI = nsnull;
return NS_OK;
@ -526,6 +543,7 @@ void
nsPrincipal::SetURI(nsIURI* aURI)
{
mCodebase = NS_TryToMakeImmutable(aURI);
mCodebaseImmutable = URIIsImmutable(mCodebase);
// Invalidate our cached origin
mOrigin = nsnull;
@ -620,6 +638,11 @@ nsPrincipal::GetDomain(nsIURI** aDomain)
return NS_OK;
}
if (mDomainImmutable) {
NS_ADDREF(*aDomain = mDomain);
return NS_OK;
}
return NS_EnsureSafeToReturn(mDomain, aDomain);
}
@ -627,6 +650,8 @@ NS_IMETHODIMP
nsPrincipal::SetDomain(nsIURI* aDomain)
{
mDomain = NS_TryToMakeImmutable(aDomain);
mDomainImmutable = URIIsImmutable(mDomain);
// Domain has changed, forget cached security policy
SetSecurityPolicy(nsnull);
@ -670,6 +695,9 @@ nsPrincipal::InitFromPersistent(const char* aPrefName,
return rv;
}
NS_TryToSetImmutable(mCodebase);
mCodebaseImmutable = URIIsImmutable(mCodebase);
mTrusted = aTrusted;
// Invalidate our cached origin