com.google.gwt.dev

Class MinimalRebuildCache

java.lang.Object

com.google.gwt.dev.MinimalRebuildCache

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

NullRebuildCache

public class MinimalRebuildCache
extends Object
implements Serializable

MinimalRebuildCache contains compiler information that can be persisted between compiles to decrease compilation time.

Cached information is specific to a single permutation and it is the responsibility of the framework driving the Compiler to supply the right Cache instance for the right Module configuration and to make sure that the Compiler is only processing one permutation at a time.

All type names referenced here are assumed to be binary names.

A "typeName" here might be a root type or nested type but a "compilationUnitName" here will always be the name of just the root type in a compilation unit.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected JTypeOracle.ImmediateTypeRelations	immediateTypeRelations

Constructor Summary

Constructors

Constructor and Description
MinimalRebuildCache()

Method Summary

Modifier and Type	Method and Description
void	addGeneratedArtifacts(ArtifactSet generatedArtifacts) Accumulates generated artifacts so that they can be output on recompiles even if no generators are run.
void	addModifiedCompilationUnitNames(TreeLogger logger, Set<String> modifiedCompilationUnitNames)
void	addSourceCompilationUnitName(String sourceCompilationUnitName)
void	addTypeReference(String fromTypeName, String toTypeName)
void	associateReboundTypeWithGeneratedCompilationUnitName(String reboundTypeName, String generatedCompilationUnitName)
void	associateReboundTypeWithInputResource(String reboundTypeName, String inputResourcePath) Record that a Generator that was ran as a result of a GWT.create(ReboundType.class) call read a particular resource.
void	clearPerTypeJsCache()
void	clearRebinderTypeAssociations(String rebinderTypeName)
void	clearReboundTypeAssociations(String reboundTypeName)
Set<String>	computeAndClearStaleTypesCache(TreeLogger logger, JTypeOracle typeOracle) Calculates the set of stale types and clears their cached Js, StatementRanges and SourceMaps.
Set<String>	computeDeletedTypeNames() Computes and returns the set of names of deleted types.
Set<String>	computeModifiedTypeNames() Computes and returns the set of names of modified types.
Set<String>	computeReachableTypeNames() Computes and returns the names of the set of types that are transitively referenceable starting from the set of root types.
void	copyFrom(MinimalRebuildCache that) Replaces the contents of this cache with the contents of the given cache.
Set<String>	filterUnreachableTypeNames(Set<String> typeNames) Return the set of provided typeNames with unreachable types filtered out.
ArtifactSet	getGeneratedArtifacts()
JTypeOracle.ImmediateTypeRelations	getImmediateTypeRelations()
String	getJs(String typeName)
int	getLastLinkedJsBytes()
Set<String>	getModifiedCompilationUnitNames()
JsPersistentPrettyNamer.PersistentPrettyNamerState	getPersistentPrettyNamerState()
Set<String>	getPreambleTypeNames()
Set<String>	getProcessedStaleTypeNames() Returns the set of the names of types that were processed as stale.
JsSourceMap	getSourceMap(String typeName)
Set<String>	getStaleTypeNames()
StatementRanges	getStatementRanges(String typeName)
ResolveRuntimeTypeReferences.IntTypeMapper	getTypeMapper()
boolean	hasJs(String typeName)
boolean	hasPreambleTypeNames()
boolean	isPopulated() Returns true if there is cached data to reuse in the next recompile.
boolean	isSourceCompilationUnit(String compilationUnitName)
boolean	knowsLastLinkedJsBytes()
void	markSourceFileStale(String typeName)
void	recordBuildResources(ModuleDef module) Records the resource paths and modification dates of build resources in the current compile and builds a list of known modified resource paths by comparing the resource paths and modification dates of build resources in the previous compile with those of the current compile.
void	recordDiskSourceResources(Map<String,Long> currentModifiedByDiskSourcePath) Records the paths and modification dates of source resources in the current compile and builds a list of known modified paths by comparing the paths and modification dates of source resources in the previous compile with those of the current compile.
void	recordDiskSourceResources(ModuleDef module) Records the paths and modification dates of source resources in the current compile and builds a list of known modified paths by comparing the paths and modification dates of source resources in the previous compile with those of the current compile.
void	recordGeneratedUnits(Collection<GeneratedUnit> generatedUnits) Records the paths and content ids of generated source resources in the current compile and updates a list of known modified paths by comparing the paths and content ids of generated source resources in the previous compile with those of the current compile.
void	recordNestedTypeName(String compilationUnitTypeName, String nestedTypeName)
void	recordNestedTypeNamesPerType(CompilationUnit compilationUnit)
void	recordRebinderTypeForReboundType(String reboundTypeName, String rebinderType) Records that rebinder type Foo contains a GWT.create(ReboundTypeBar.class) call.
void	removeReferencesFrom(String fromTypeName)
void	setJsForType(TreeLogger logger, String typeName, String typeJs)
void	setJsoTypeNames(Set<String> jsoTypeNames, Set<String> singleJsoImplInterfaceNames, Set<String> dualJsoImplInterfaceNames) Records the names of JSO subtypes, single impl interfaces and dual impl interfaces as well as keeps track of types that entered or left one of the lists in the most recent iteration.
void	setLastLinkedJsBytes(int lastLinkedJsBytes)
void	setPreambleTypeNames(TreeLogger logger, Set<String> preambleTypeNames)
void	setProcessedStaleTypeNames(Set<String> processedStaleTypeNames)
void	setRootTypeNames(Collection<String> rootTypeNames)
void	setSourceMapForType(String typeName, JsSourceMap sourceMap)
void	setStatementRangesForType(String typeName, StatementRanges statementRanges)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

immediateTypeRelations

protected final JTypeOracle.ImmediateTypeRelations immediateTypeRelations

Constructor Detail

MinimalRebuildCache

public MinimalRebuildCache()

Method Detail

addGeneratedArtifacts

public void addGeneratedArtifacts(ArtifactSet generatedArtifacts)

Accumulates generated artifacts so that they can be output on recompiles even if no generators are run.

addModifiedCompilationUnitNames

public void addModifiedCompilationUnitNames(TreeLogger logger,
                                            Set<String> modifiedCompilationUnitNames)

addSourceCompilationUnitName

public void addSourceCompilationUnitName(String sourceCompilationUnitName)

addTypeReference

public void addTypeReference(String fromTypeName,
                             String toTypeName)

associateReboundTypeWithGeneratedCompilationUnitName

public void associateReboundTypeWithGeneratedCompilationUnitName(String reboundTypeName,
                                                                 String generatedCompilationUnitName)

associateReboundTypeWithInputResource

public void associateReboundTypeWithInputResource(String reboundTypeName,
                                                  String inputResourcePath)

Record that a Generator that was ran as a result of a GWT.create(ReboundType.class) call read a particular resource.

clearPerTypeJsCache

public void clearPerTypeJsCache()

clearRebinderTypeAssociations

public void clearRebinderTypeAssociations(String rebinderTypeName)

clearReboundTypeAssociations

public void clearReboundTypeAssociations(String reboundTypeName)

computeAndClearStaleTypesCache

public Set<String> computeAndClearStaleTypesCache(TreeLogger logger,
                                                  JTypeOracle typeOracle)

Calculates the set of stale types and clears their cached Js, StatementRanges and SourceMaps.

The calculation of stale types starts with the list of known modified types and expands that set using various patterns intended to find any types whose output JS would be affected by the changes in the modified types. For example if the parent of class Foo was changed then the castmaps in all children of Foo need to be recreated.

In some ways this process is similar to that performed by the CompilationUnitInvalidator but it differs both in what type of cached objects are being cleared (JS versus CompilationUnits) and in what invalidation rules must be applied. CompilationUnitInvalidator is concerned only with changes in interface while the invalidation here must also look at JSO promotion/demotion and cast references because of the peculiarities of output JS format.

computeDeletedTypeNames

public Set<String> computeDeletedTypeNames()

Computes and returns the set of names of deleted types.

Deleted types are all those types that are nested within compilation units that are known to have been deleted.

computeModifiedTypeNames

public Set<String> computeModifiedTypeNames()

Computes and returns the set of names of modified types.

Modified types are all those types that are nested within compilation units that are known to have been modified.

computeReachableTypeNames

public Set<String> computeReachableTypeNames()

Computes and returns the names of the set of types that are transitively referenceable starting from the set of root types.

Should only be called once per compile, so that the "lastReachableTypeNames" list accurately reflects the reachable types of the immediately previous compile.

copyFrom

public void copyFrom(MinimalRebuildCache that)

Replaces the contents of this cache with the contents of the given cache.

This operation should be kept fast as it will be called once per compile. At the moment it takes about 2.5% of the time in an incremental recompile. If wanting to recover this time in the future consider parallelizing the copy or grouping the values from hash tables with similar keys into a single data object and hashtable so that fewer references need to be replicated.

filterUnreachableTypeNames

public Set<String> filterUnreachableTypeNames(Set<String> typeNames)

Return the set of provided typeNames with unreachable types filtered out.

getGeneratedArtifacts

public ArtifactSet getGeneratedArtifacts()

getImmediateTypeRelations

public JTypeOracle.ImmediateTypeRelations getImmediateTypeRelations()

getTypeMapper

public ResolveRuntimeTypeReferences.IntTypeMapper getTypeMapper()

getJs

public String getJs(String typeName)

getLastLinkedJsBytes

public int getLastLinkedJsBytes()

getModifiedCompilationUnitNames

public Set<String> getModifiedCompilationUnitNames()

getPersistentPrettyNamerState

public JsPersistentPrettyNamer.PersistentPrettyNamerState getPersistentPrettyNamerState()

getPreambleTypeNames

public Set<String> getPreambleTypeNames()

getProcessedStaleTypeNames

public Set<String> getProcessedStaleTypeNames()

Returns the set of the names of types that were processed as stale. This list can be larger than the calculated list of stale types for example when a new reference is created to a type that had not been processed in a previous compile.

getSourceMap

public JsSourceMap getSourceMap(String typeName)

getStaleTypeNames

public Set<String> getStaleTypeNames()

getStatementRanges

public StatementRanges getStatementRanges(String typeName)

hasJs

public boolean hasJs(String typeName)

hasPreambleTypeNames

public boolean hasPreambleTypeNames()

isPopulated

public boolean isPopulated()

Returns true if there is cached data to reuse in the next recompile.

isSourceCompilationUnit

public boolean isSourceCompilationUnit(String compilationUnitName)

knowsLastLinkedJsBytes

public boolean knowsLastLinkedJsBytes()

markSourceFileStale

public void markSourceFileStale(String typeName)

recordBuildResources

public void recordBuildResources(ModuleDef module)

Records the resource paths and modification dates of build resources in the current compile and builds a list of known modified resource paths by comparing the resource paths and modification dates of build resources in the previous compile with those of the current compile.

recordDiskSourceResources

public void recordDiskSourceResources(Map<String,Long> currentModifiedByDiskSourcePath)

Records the paths and modification dates of source resources in the current compile and builds a list of known modified paths by comparing the paths and modification dates of source resources in the previous compile with those of the current compile.

recordDiskSourceResources

public void recordDiskSourceResources(ModuleDef module)

Records the paths and modification dates of source resources in the current compile and builds a list of known modified paths by comparing the paths and modification dates of source resources in the previous compile with those of the current compile.

recordGeneratedUnits

public void recordGeneratedUnits(Collection<GeneratedUnit> generatedUnits)

Records the paths and content ids of generated source resources in the current compile and updates a list of known modified paths by comparing the paths and content ids of generated source resources in the previous compile with those of the current compile.

recordNestedTypeName

public void recordNestedTypeName(String compilationUnitTypeName,
                                 String nestedTypeName)

recordNestedTypeNamesPerType

public void recordNestedTypeNamesPerType(CompilationUnit compilationUnit)

recordRebinderTypeForReboundType

public void recordRebinderTypeForReboundType(String reboundTypeName,
                                             String rebinderType)

Records that rebinder type Foo contains a GWT.create(ReboundTypeBar.class) call.

removeReferencesFrom

public void removeReferencesFrom(String fromTypeName)

setJsForType

public void setJsForType(TreeLogger logger,
                         String typeName,
                         String typeJs)

setJsoTypeNames

public void setJsoTypeNames(Set<String> jsoTypeNames,
                            Set<String> singleJsoImplInterfaceNames,
                            Set<String> dualJsoImplInterfaceNames)

Records the names of JSO subtypes, single impl interfaces and dual impl interfaces as well as keeps track of types that entered or left one of the lists in the most recent iteration.

setLastLinkedJsBytes

public void setLastLinkedJsBytes(int lastLinkedJsBytes)

setPreambleTypeNames

public void setPreambleTypeNames(TreeLogger logger,
                                 Set<String> preambleTypeNames)

setProcessedStaleTypeNames

public void setProcessedStaleTypeNames(Set<String> processedStaleTypeNames)

setRootTypeNames

public void setRootTypeNames(Collection<String> rootTypeNames)

setSourceMapForType

public void setSourceMapForType(String typeName,
                                JsSourceMap sourceMap)

setStatementRangesForType

public void setStatementRangesForType(String typeName,
                                      StatementRanges statementRanges)