clang
3.7.0
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#include <EHScopeStack.h>
Classes | |
class | Cleanup |
class | ConditionalCleanup |
class | iterator |
A non-stable pointer into the scope stack. More... | |
class | stable_iterator |
Public Member Functions | |
EHScopeStack () | |
~EHScopeStack () | |
template<class T , class... As> | |
void | pushCleanup (CleanupKind Kind, As...A) |
Push a lazily-created cleanup on the stack. More... | |
template<class T , class... As> | |
void | pushCleanupTuple (CleanupKind Kind, std::tuple< As...> A) |
Push a lazily-created cleanup on the stack. Tuple version. More... | |
template<class T , class... As> | |
T * | pushCleanupWithExtra (CleanupKind Kind, size_t N, As...A) |
void | pushCopyOfCleanup (CleanupKind Kind, const void *Cleanup, size_t Size) |
void | popCleanup () |
Pops a cleanup scope off the stack. This is private to CGCleanup.cpp. More... | |
class EHCatchScope * | pushCatch (unsigned NumHandlers) |
void | popCatch () |
Pops a catch scope off the stack. This is private to CGException.cpp. More... | |
class EHFilterScope * | pushFilter (unsigned NumFilters) |
Push an exceptions filter on the stack. More... | |
void | popFilter () |
Pops an exceptions filter off the stack. More... | |
void | pushTerminate () |
Push a terminate handler on the stack. More... | |
void | popTerminate () |
Pops a terminate handler off the stack. More... | |
bool | containsOnlyLifetimeMarkers (stable_iterator Old) const |
bool | empty () const |
Determines whether the exception-scopes stack is empty. More... | |
bool | requiresLandingPad () const |
bool | hasNormalCleanups () const |
Determines whether there are any normal cleanups on the stack. More... | |
stable_iterator | getInnermostNormalCleanup () const |
stable_iterator | getInnermostActiveNormalCleanup () const |
stable_iterator | getInnermostEHScope () const |
stable_iterator | getInnermostActiveEHScope () const |
iterator | begin () const |
Returns an iterator pointing to the innermost EH scope. More... | |
iterator | end () const |
Returns an iterator pointing to the outermost EH scope. More... | |
stable_iterator | stable_begin () const |
stable_iterator | stabilize (iterator it) const |
Translates an iterator into a stable_iterator. More... | |
iterator | find (stable_iterator save) const |
void | removeCleanup (stable_iterator save) |
Removes the cleanup pointed to by the given stable_iterator. More... | |
BranchFixup & | addBranchFixup () |
Add a branch fixup to the current cleanup scope. More... | |
unsigned | getNumBranchFixups () const |
BranchFixup & | getBranchFixup (unsigned I) |
void | popNullFixups () |
void | clearFixups () |
Static Public Member Functions | |
static stable_iterator | stable_end () |
Create a stable reference to the bottom of the EH stack. More... | |
A stack of scopes which respond to exceptions, including cleanups and catch blocks.
Definition at line 97 of file EHScopeStack.h.
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Definition at line 255 of file EHScopeStack.h.
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Definition at line 258 of file EHScopeStack.h.
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Add a branch fixup to the current cleanup scope.
Definition at line 384 of file EHScopeStack.h.
References hasNormalCleanups().
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Returns an iterator pointing to the innermost EH scope.
Definition at line 518 of file CGCleanup.h.
Referenced by containsOnlyLifetimeMarkers(), clang::CodeGen::CodeGenFunction::EmitAutoVarCleanups(), clang::CodeGen::CodeGenFunction::EmitEndEHSpec(), clang::CodeGen::CodeGenFunction::EmitLandingPad(), clang::CodeGen::CodeGenFunction::FinallyInfo::exit(), clang::CodeGen::CodeGenFunction::ExitCXXTryStmt(), clang::CodeGen::CodeGenFunction::ExitSEHTryStmt(), clang::CodeGen::CodeGenFunction::getInvokeDestImpl(), clang::CodeGen::CodeGenFunction::initFullExprCleanup(), popCatch(), clang::CodeGen::CodeGenFunction::popCatchScope(), popCleanup(), popFilter(), and popTerminate().
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Clears the branch-fixups list. This should only be called by ResolveAllBranchFixups.
Definition at line 403 of file EHScopeStack.h.
Referenced by ResolveAllBranchFixups().
bool EHScopeStack::containsOnlyLifetimeMarkers | ( | EHScopeStack::stable_iterator | Old | ) | const |
Definition at line 128 of file CGCleanup.cpp.
References begin(), clang::CodeGen::EHCleanupScope::isLifetimeMarker(), and stabilize().
Referenced by clang::CodeGen::CodeGenFunction::FinishFunction().
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Determines whether the exception-scopes stack is empty.
Definition at line 327 of file EHScopeStack.h.
Referenced by clang::CodeGen::CodeGenFunction::FinishFunction(), clang::CodeGen::CodeGenFunction::getInvokeDestImpl(), popCatch(), popCleanup(), popFilter(), popTerminate(), and clang::CodeGen::CodeGenFunction::SimplifyForwardingBlocks().
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Returns an iterator pointing to the outermost EH scope.
Definition at line 522 of file CGCleanup.h.
Referenced by clang::CodeGen::CodeGenFunction::EmitLandingPad().
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Turn a stable reference to a scope depth into a unstable pointer to the EH stack.
Definition at line 542 of file CGCleanup.h.
References clang::CodeGen::EHScopeStack::stable_iterator::isValid(), and stable_begin().
Referenced by clang::CodeGen::CodeGenFunction::EmitLandingPad(), clang::CodeGen::CodeGenFunction::getEHDispatchBlock(), getInnermostActiveEHScope(), getInnermostActiveNormalCleanup(), IsUsedAsEHCleanup(), IsUsedAsNormalCleanup(), popNullFixups(), and SetupCleanupBlockActivation().
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Definition at line 391 of file EHScopeStack.h.
References getNumBranchFixups().
Referenced by ResolveAllBranchFixups().
EHScopeStack::stable_iterator EHScopeStack::getInnermostActiveEHScope | ( | ) | const |
Definition at line 150 of file CGCleanup.cpp.
References find(), clang::CodeGen::EHScope::getEnclosingEHScope(), getInnermostEHScope(), clang::CodeGen::EHCleanupScope::isActive(), and stable_end().
EHScopeStack::stable_iterator EHScopeStack::getInnermostActiveNormalCleanup | ( | ) | const |
Definition at line 140 of file CGCleanup.cpp.
References find(), clang::CodeGen::EHCleanupScope::getEnclosingNormalCleanup(), getInnermostNormalCleanup(), clang::CodeGen::EHCleanupScope::isActive(), and stable_end().
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Definition at line 345 of file EHScopeStack.h.
Referenced by clang::CodeGen::CallArgList::allocateArgumentMemory(), clang::CodeGen::CodeGenFunction::EmitLandingPad(), getInnermostActiveEHScope(), IsUsedAsEHCleanup(), and pushFilter().
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Returns the innermost normal cleanup on the stack, or stable_end() if there are no normal cleanups.
Definition at line 340 of file EHScopeStack.h.
Referenced by getInnermostActiveNormalCleanup(), clang::CodeGen::CodeGenFunction::getJumpDestInCurrentScope(), IsUsedAsNormalCleanup(), and clang::CodeGen::CodeGenFunction::LexicalScope::rescopeLabels().
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Definition at line 390 of file EHScopeStack.h.
Referenced by getBranchFixup(), and ResolveAllBranchFixups().
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Determines whether there are any normal cleanups on the stack.
Definition at line 334 of file EHScopeStack.h.
References stable_end().
Referenced by addBranchFixup(), clang::CodeGen::CodeGenFunction::EmitLabel(), popCleanup(), and popNullFixups().
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Pops a catch scope off the stack. This is private to CGException.cpp.
Definition at line 526 of file CGCleanup.h.
References begin(), empty(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHCatchScope::getNumHandlers(), and clang::CodeGen::EHCatchScope::getSizeForNumHandlers().
Referenced by clang::CodeGen::CodeGenFunction::ExitCXXTryStmt(), clang::CodeGen::CodeGenFunction::ExitSEHTryStmt(), and clang::CodeGen::CodeGenFunction::popCatchScope().
void EHScopeStack::popCleanup | ( | ) |
Pops a cleanup scope off the stack. This is private to CGCleanup.cpp.
Definition at line 190 of file CGCleanup.cpp.
References begin(), clang::CodeGen::EHCleanupScope::Destroy(), empty(), clang::CodeGen::EHCleanupScope::getAllocatedSize(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHCleanupScope::getEnclosingNormalCleanup(), hasNormalCleanups(), and popNullFixups().
void EHScopeStack::popFilter | ( | ) |
Pops an exceptions filter off the stack.
Definition at line 223 of file CGCleanup.cpp.
References begin(), empty(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHFilterScope::getNumFilters(), and clang::CodeGen::EHFilterScope::getSizeForNumFilters().
Referenced by clang::CodeGen::CodeGenFunction::EmitEndEHSpec().
void EHScopeStack::popNullFixups | ( | ) |
Pops lazily-removed fixups from the end of the list. This should only be called by procedures which have just popped a cleanup or resolved one or more fixups.
Remove any 'null' fixups on the stack. However, we can't pop more fixups than the fixup depth on the innermost normal cleanup, or else fixups that we try to add to that cleanup will end up in the wrong place. We could try to shrink fixup depths, but that's actually a lot of work for little benefit.
Definition at line 251 of file CGCleanup.cpp.
References find(), and hasNormalCleanups().
Referenced by popCleanup().
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Pops a terminate handler off the stack.
Definition at line 534 of file CGCleanup.h.
References begin(), empty(), clang::CodeGen::EHScope::getEnclosingEHScope(), and clang::CodeGen::EHTerminateScope::getSize().
Referenced by EmitCleanup(), clang::CodeGen::CodeGenFunction::EmitEndEHSpec(), and InitCatchParam().
EHCatchScope * EHScopeStack::pushCatch | ( | unsigned | NumHandlers | ) |
Push a set of catch handlers on the stack. The catch is uninitialized and will need to have the given number of handlers set on it.
Definition at line 232 of file CGCleanup.cpp.
References clang::CodeGen::EHCatchScope::getSizeForNumHandlers(), and stable_begin().
Referenced by clang::CodeGen::CGObjCRuntime::EmitTryCatchStmt(), clang::CodeGen::CodeGenFunction::FinallyInfo::enter(), clang::CodeGen::CodeGenFunction::EnterCXXTryStmt(), and clang::CodeGen::CodeGenFunction::EnterSEHTryStmt().
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Push a lazily-created cleanup on the stack.
Definition at line 261 of file EHScopeStack.h.
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Push a lazily-created cleanup on the stack. Tuple version.
Definition at line 269 of file EHScopeStack.h.
Referenced by clang::CodeGen::CodeGenFunction::pushFullExprCleanup().
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Push a cleanup with non-constant storage requirements on the stack. The cleanup type must provide an additional static method: static size_t getExtraSize(size_t); The argument to this method will be the value N, which will also be passed as the first argument to the constructor.
The data stored in the extra storage must obey the same restrictions as normal cleanup member data.
The pointer returned from this method is valid until the cleanup stack is modified.
Definition at line 289 of file EHScopeStack.h.
Referenced by EnterNewDeleteCleanup().
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Definition at line 294 of file EHScopeStack.h.
EHFilterScope * EHScopeStack::pushFilter | ( | unsigned | NumFilters | ) |
Push an exceptions filter on the stack.
Definition at line 215 of file CGCleanup.cpp.
References getInnermostEHScope(), clang::CodeGen::EHFilterScope::getSizeForNumFilters(), stable_begin(), and stable_end().
Referenced by clang::CodeGen::CodeGenFunction::EmitStartEHSpec().
void EHScopeStack::pushTerminate | ( | ) |
Push a terminate handler on the stack.
Definition at line 240 of file CGCleanup.cpp.
References clang::CodeGen::EHTerminateScope::getSize(), and stable_begin().
Referenced by EmitCleanup(), clang::CodeGen::CodeGenFunction::EmitStartEHSpec(), and InitCatchParam().
void clang::CodeGen::EHScopeStack::removeCleanup | ( | stable_iterator | save | ) |
Removes the cleanup pointed to by the given stable_iterator.
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Definition at line 329 of file EHScopeStack.h.
References stable_end().
Referenced by clang::CodeGen::CodeGenFunction::EmitLandingPad(), clang::CodeGen::CodeGenFunction::getInvokeDest(), and clang::CodeGen::CodeGenFunction::getInvokeDestImpl().
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Translates an iterator into a stable_iterator.
Definition at line 549 of file CGCleanup.h.
Referenced by containsOnlyLifetimeMarkers().
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Create a stable reference to the top of the EH stack. The returned reference is valid until that scope is popped off the stack.
Definition at line 364 of file EHScopeStack.h.
Referenced by clang::CodeGen::CodeGenFunction::EmitAnyExprToExn(), clang::CodeGen::CodeGenFunction::EmitCXXNewExpr(), clang::CodeGen::CodeGenFunction::EmitLabel(), clang::CodeGen::CodeGenFunction::EmitNewArrayInitializer(), enterBlockScope(), find(), clang::CodeGen::CodeGenFunction::FinishFunction(), pushCatch(), pushFilter(), pushTerminate(), clang::CodeGen::CodeGenFunction::RunCleanupsScope::requiresCleanups(), clang::CodeGen::CodeGenFunction::RunCleanupsScope::RunCleanupsScope(), and clang::CodeGen::CodeGenFunction::StartFunction().
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Create a stable reference to the bottom of the EH stack.
Definition at line 369 of file EHScopeStack.h.
Referenced by clang::CodeGen::CodeGenFunction::getEHDispatchBlock(), getInnermostActiveEHScope(), getInnermostActiveNormalCleanup(), hasNormalCleanups(), pushFilter(), requiresLandingPad(), and clang::CodeGen::CodeGenFunction::LexicalScope::rescopeLabels().