renamed fnblk to funblk, cblk to ctlblk.
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enhancing the compiler code to handle 'var' inside 'class'
This commit is contained in:
464
src/kernel.hcl
464
src/kernel.hcl
@ -1,4 +1,7 @@
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class Apex {
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fun isNil?() { return false }
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fun notNil?() { return true }
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fun(#class) basicNew(size) {
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return (core.basicNew self size)
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}
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@ -30,9 +33,8 @@ class Apex {
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fun basicSize() {
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return (core.basicSize self)
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}
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}
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class Object: Apex {
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## TODO: fun perform(name ...) {}
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}
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class(#uncopyable #varying #limited #final) Class: Apex [
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@ -62,6 +64,14 @@ class(#uncopyable #varying #limited #final) Class: Apex [
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}
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}
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class UndefinedObject: Apex {
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fun isNil?() { return true }
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fun notNil?() { return false }
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}
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class Object: Apex {
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}
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class Collection: Object {
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fun length() {
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return (core.basicSize self)
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@ -113,6 +123,455 @@ class(#char #varying) String: FixedSizedCollection {
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}
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## ---------------------------------------------------------------------------------
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## // TODO: consider if System can replace Apex itself.
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## // System, being the top class, seems to give very natural way of
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## // offering global system-level functions and interfaces.
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## //
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## // class System { ... }
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## // class Object: System { .... }
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## // System at: #
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## // System logNl: 'xxxxx'.
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## // System getUint8(ptr,offset)
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##
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## class System: Apex [
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## [
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## asyncsg ## async semaphore group
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## gcfin_sem ## gc finalization semaphore
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## gcfin_should_exit
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## ossig_pid
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## shr ## signal handler registry
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## ]
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##
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## ] {
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## ## var(#class) asyncsg.
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## ## var(#class) gcfin_sem.
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## ## var(#class) gcfin_should_exit := false.
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## ## var(#class) ossig_pid.
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## ## var(#class) shr. // signal handler registry
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##
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## ## pooldic Log
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## ## {
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## ## // -----------------------------------------------------------
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## ## // defines log levels
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## ## // these items must follow defintions in moo.h
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## ## // -----------------------------------------------------------
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## ##
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## ## DEBUG := 1,
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## ## INFO := 2,
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## ## WARN := 4,
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## ## ERROR := 8,
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## ## FATAL := 16
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## ## }
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##
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## ## initialize class variables
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## shr := (OrderedCollection:new)
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## asyncsg := (SemaphoreGroup:new)
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##
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## fun(#class) _initialize {
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## self.shr := OrderedCollection new.
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## self.asyncsg := SemaphoreGroup new.
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## }
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##
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## fun(#class) addAsyncSemaphore: sem {
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## return (self.asyncsg addSemaphore: sem)
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## }
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##
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## fun(#class) removeAsyncSemaphore: sem {
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## return (self.asyncsg removeSemaphore: sem)
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## }
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##
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## fun(#class) handleAsyncEvent {
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## return (self.asyncsg wait).
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## }
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##
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## fun(#class) installSignalHandler: block {
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## return (self.shr addLast: block)
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## }
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##
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## fun(#class) uninstallSignalHandler: block {
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## self.shr remove: block.
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## }
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##
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## fun(#class) startup(class_name, fun_name) {
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## | class ret gcfin_proc ossig_proc |
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##
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## System gc.
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##
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## class := self at: class_name. // System at: class_name.
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## if (class isError)
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## {
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## self error: ("Unable to find the class - " & class_name).
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## }.
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##
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## self _initialize.
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##
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## // start the gc finalizer process and os signal handler process
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## //[ self __gc_finalizer ] fork.
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## //[ self __os_sig_handler ] fork.
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## gcfin_proc := [ self __gc_finalizer ] newSystemProcess.
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## ossig_proc := [ :caller | self __os_sig_handler: caller ] newSystemProcess(thisProcess).
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##
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## self.ossig_pid := ossig_proc id.
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##
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## gcfin_proc resume.
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## ossig_proc resume.
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##
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## [
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## // TODO: change the fun signature to variadic and pass extra arguments to perform???
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## ret := class perform: fun_name.
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## ]
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## ensure: [
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## // signal end of the main process.
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## // __os_sig_handler will terminate all running subprocesses.
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## self _setSig: 16rFF.
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## ].
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##
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## ^ret.
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## }
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##
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## fun(#class) __gc_finalizer
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## {
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## | tmp gc |
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##
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## gc := false.
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##
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## self.gcfin_should_exit := false.
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## self.gcfin_sem := Semaphore new.
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## self.gcfin_sem signalOnGCFin. // tell VM to signal this semaphore when it schedules gc finalization.
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##
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## [
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## while (true)
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## {
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## while ((tmp := self _popCollectable) notError)
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## {
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## if (tmp respondsTo: #finalize)
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## {
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## // finalize is protected with an exception handler.
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## // the exception is ignored except it is logged.
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## [ tmp finalize ] on: Exception do: [:ex | System longNl: "Exception in finalize - " & ex messageText ]
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## }.
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## }.
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##
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## //if (Processor total_count == 1)
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## //if (Processor gcfin_should_exit)
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## if (self.gcfin_should_exit)
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## {
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## // exit from this loop when there are no other processes running except this finalizer process
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## if (gc)
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## {
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## System logNl: "Exiting the GC finalization process " & (thisProcess id) asString.
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## break.
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## }.
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##
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## System logNl: "Forcing garbage collection before termination in " & (thisProcess id) asString.
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## self collectGarbage.
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## gc := true.
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## }
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## else
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## {
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## gc := false.
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## }.
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##
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## self.gcfin_sem wait.
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## }
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## ] ensure: [
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## self.gcfin_sem signal. // in case the process is stuck in wait.
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## self.gcfin_sem unsignal.
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## System logNl: "End of GC finalization process " & (thisProcess id) asString.
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## ].
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## }
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##
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## fun(#class) __os_sig_handler: caller {
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## | os_intr_sem signo sh |
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##
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## os_intr_sem := Semaphore new.
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## os_intr_sem signalOnInput: System _getSigfd.
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##
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## [
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## while (true) {
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## until ((signo := self _getSig) isError) {
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## // TODO: Do i have to protected this in an exception handler???
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## //TODO: Execute Handler for signo.
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##
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## System logNl: "Interrupt detected - signal no - " & signo asString.
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##
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## //System logNl: "WWWWWWWWWWWWWWWWWWWWWWWWW ".
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## // user-defined signal handler is not allowed for 16rFF
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## if (signo == 16rFF) { goto done }.
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## //System logNl: "OHHHHHHHHHHHHHH ".
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##
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## ifnot (self.shr isEmpty)
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## {
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## //System logNl: "About to execute handler for the signal detected - " & signo asString.
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## self.shr do: [ :handler | handler value: signo ].
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## }
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## else
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## {
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## //System logNl: "Jumping to done detected - signal no - " & signo asString.
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## if (signo == 2) { goto done }.
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## }.
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## }.
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## //System logNl: "Waiting for signal on os_intr_sem...".
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## os_intr_sem wait.
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## }.
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## done:
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## //System logNl: "Jumped to done detected - signal no - " & signo asString.
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## nil.
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## ]
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## ensure: [
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## | pid proc oldps |
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##
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## //System logNl: "Aborting signal handler......".
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## // stop subscribing to signals.
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## os_intr_sem signal.
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## os_intr_sem unsignal.
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##
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## // the caller must request to terminate all its child processes..
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##
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## // this disables autonomous process switching only.
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## // TODO: check if the ensure block code can trigger process switching?
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## // what happens if the ensure block creates new processes? this is likely to affect the termination loop below.
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## // even the id of the terminated process may get reused....
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## oldps := self _toggleProcessSwitching: false.
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##
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## /*
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## 0 -> startup <--- this should also be stored in the "caller" variable.
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## 1 -> __gc_finalizer
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## 2 -> __os_sig_handler
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## 3 .. -> other processes started by application.
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##
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## from the second run onwards, the starting pid may not be 0.
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## */
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## //proc := System _findNextProcess: self.ossig_pid.
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## proc := System _findFirstProcess.
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## while (proc notError)
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## {
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## pid := proc id.
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## if (proc isNormal)
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## {
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## System logNl: ("Requesting to terminate process of id - " & pid asString).
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## proc terminate.
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## }.
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## proc := System _findNextProcess: pid.
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## }.
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##
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## System logNl: "Requesting to terminate the caller process of id " & (caller id) asString.
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## caller terminate. // terminate the startup process.
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## self _toggleProcessSwitching: oldps.
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##
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## System logNl: ">>>>End of OS signal handler process " & (thisProcess id) asString.
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##
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## self.gcfin_should_exit := true.
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## self.gcfin_sem signal. // wake the gcfin process.
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##
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## self _halting. // inform VM that it should get ready for halting.
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## ].
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## }
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##
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## fun(#class,#primitive) _getSig.
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## fun(#class,#primitive) _getSigfd.
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## fun(#class,#primitive) _setSig: signo.
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## fun(#class,#primitive) _halting.
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## fun(#class,#primitive) _toggleProcessSwitching: v.
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## fun(#class,#primitive,#lenient) _findProcessById: id.
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## fun(#class,#primitive,#lenient) _findFirstProcess.
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## fun(#class,#primitive,#lenient) _findLastProcess.
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## fun(#class,#primitive,#lenient) _findPreviousProcess: p. // process id or process object
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## fun(#class,#primitive,#lenient) _findNextProcess: p. // process id or process object
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##
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## fun(#class,#primitive) _popCollectable.
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## fun(#class,#primitive) collectGarbage.
|
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## fun(#class,#primitive) gc.
|
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## fun(#class,#primitive) return: object to: context.
|
||||
##
|
||||
## // =======================================================================================
|
||||
##
|
||||
## fun(#class) sleepForSecs: secs {
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||||
## // -----------------------------------------------------
|
||||
## // put the calling process to sleep for given seconds.
|
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## // -----------------------------------------------------
|
||||
## | s |
|
||||
## s := Semaphore new.
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## s signalAfterSecs: secs.
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||||
## s wait.
|
||||
## }
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||||
##
|
||||
## fun(#class) sleepForSecs: secs nanosecs: nanosecs
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||||
## {
|
||||
## // -----------------------------------------------------
|
||||
## // put the calling process to sleep for given seconds.
|
||||
## // -----------------------------------------------------
|
||||
## | s |
|
||||
## s := Semaphore new.
|
||||
## s signalAfterSecs: secs nanosecs: nanosecs.
|
||||
## s wait.
|
||||
## }
|
||||
##
|
||||
## // the following funs may not look suitable to be placed
|
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## // inside a system dictionary. but they are here for quick and dirty
|
||||
## // output production from the moo code.
|
||||
## // System logNl: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'.
|
||||
## //
|
||||
## fun(#class,#variadic,#primitive) log(level,msg1).
|
||||
##
|
||||
## /*
|
||||
## TODO: how to pass all variadic arguments to another variadic funs???
|
||||
## fun(#class,#variadic) logInfo (msg1)
|
||||
## {
|
||||
## ^self log (System.Log.INFO,msg1)
|
||||
## }
|
||||
## */
|
||||
## fun(#class) atLevel: level log: message
|
||||
## {
|
||||
## <primitive: #System_log>
|
||||
## // do nothing upon logging failure
|
||||
## }
|
||||
##
|
||||
## fun(#class) atLevel: level log: message and: message2
|
||||
## {
|
||||
## <primitive: #System_log>
|
||||
## // do nothing upon logging failure
|
||||
## }
|
||||
##
|
||||
## fun(#class) atLevel: level log: message and: message2 and: message3
|
||||
## {
|
||||
## <primitive: #System_log>
|
||||
## // do nothing upon logging failure
|
||||
## }
|
||||
##
|
||||
## fun(#class) atLevel: level logNl: message
|
||||
## {
|
||||
## // the #_log primitive accepts an array.
|
||||
## // so the following lines should work also.
|
||||
## // | x |
|
||||
## // x := Array new: 2.
|
||||
## // x at: 0 put: message.
|
||||
## // x at: 1 put: "\n".
|
||||
## // ^self atLevel: level log: x.
|
||||
##
|
||||
## ^self atLevel: level log: message and: "\n".
|
||||
## }
|
||||
##
|
||||
## fun(#class) atLevel: level logNl: message and: message2
|
||||
## {
|
||||
## ^self atLevel: level log: message and: message2 and: "\n".
|
||||
## }
|
||||
##
|
||||
## fun(#class) log: message
|
||||
## {
|
||||
## ^self atLevel: System.Log.INFO log: message.
|
||||
## }
|
||||
##
|
||||
## fun(#class) log: message and: message2
|
||||
## {
|
||||
## ^self atLevel: System.Log.INFO log: message and: message2.
|
||||
## }
|
||||
##
|
||||
## fun(#class) logNl
|
||||
## {
|
||||
## ^self atLevel: System.Log.INFO log: "\n".
|
||||
## }
|
||||
##
|
||||
## fun(#class) logNl: message
|
||||
## {
|
||||
## ^self atLevel: System.Log.INFO logNl: message.
|
||||
## }
|
||||
##
|
||||
## fun(#class) logNl: message and: message2
|
||||
## {
|
||||
## ^self atLevel: System.Log.INFO logNl: message and: message2.
|
||||
## }
|
||||
##
|
||||
## fun(#class) backtrace
|
||||
## {
|
||||
## | ctx oldps |
|
||||
## // TOOD: IMPROVE THIS EXPERIMENTAL BACKTRACE... MOVE THIS TO System>>backtrace and skip the first fun context for backtrace itself.
|
||||
## // TODO: make this fun atomic? no other process should get scheduled while this function is running?
|
||||
## // possible imementation funs:
|
||||
## // 1. disable task switching? ->
|
||||
## // 2. use a global lock.
|
||||
## // 3. make this a primitive function. -> natually no callback.
|
||||
## // 4. introduce a new fun attribute. e.g. #atomic -> vm disables task switching or uses a lock to achieve atomicity.
|
||||
## // >>>> i think it should not be atomic as a while. only logging output should be produeced at one go.
|
||||
##
|
||||
## oldps := System _toggleProcessSwitching: false.
|
||||
## System logNl: "== BACKTRACE ==".
|
||||
##
|
||||
## //ctx := thisContext.
|
||||
## ctx := thisContext sender. // skip the current context. skip to the caller context.
|
||||
## while (ctx notNil)
|
||||
## {
|
||||
## // if (ctx sender isNil) { break }. // to skip the fake top level call context...
|
||||
##
|
||||
## if (ctx class == MethodContext)
|
||||
## {
|
||||
## System log: " ";
|
||||
## log: ctx fun owner name;
|
||||
## log: ">>";
|
||||
## log: ctx fun name;
|
||||
## log: " (";
|
||||
## log: ctx fun sourceFile;
|
||||
## log: " ";
|
||||
## log: (ctx fun ipSourceLine: (ctx pc)) asString;
|
||||
## logNl: ")".
|
||||
## //System logNl: (" " & ctx fun owner name & ">>" & ctx fun name &
|
||||
## // " (" & ctx fun sourceFile & " " & (ctx fun ipSourceLine: (ctx pc)) asString & ")").
|
||||
## }.
|
||||
## // TODO: include blockcontext???
|
||||
## ctx := ctx sender.
|
||||
## }.
|
||||
## System logNl: "== END OF BACKTRACE ==".
|
||||
## System _toggleProcessSwitching: oldps.
|
||||
## }
|
||||
##
|
||||
## ## /* nsdic access */
|
||||
## ## fun(#class) at: key
|
||||
## ## {
|
||||
## ## ^self nsdic at: key
|
||||
## ## }
|
||||
## ##
|
||||
## ## fun(#class) at: key put: value
|
||||
## ## {
|
||||
## ## ^self nsdic at: key put: value
|
||||
## ## }
|
||||
## ##
|
||||
## ## /* raw memory allocation */
|
||||
## ## fun(#class,#primitive) malloc (size).
|
||||
## ## fun(#class,#primitive) calloc (size).
|
||||
## ## fun(#class,#primitive) free (rawptr).
|
||||
## ##
|
||||
## ## fun(#class,#primitive) malloc: size.
|
||||
## ## fun(#class,#primitive) calloc: size.
|
||||
## ## fun(#class,#primitive) free: rawptr.
|
||||
## ##
|
||||
## ## /* raw memory access */
|
||||
## ## fun(#class,#primitive) getInt8 (rawptr, offset). // <primitive: #System__getInt8>
|
||||
## ## fun(#class,#primitive) getInt16 (rawptr, offset).
|
||||
## ## fun(#class,#primitive) getInt32 (rawptr, offset).
|
||||
## ## fun(#class,#primitive) getInt64 (rawptr, offset).
|
||||
## ## fun(#class,#primitive) getUint8 (rawptr, offset). // <primitive: #System__getUint8>
|
||||
## ## fun(#class,#primitive) getUint16 (rawptr, offset).
|
||||
## ## fun(#class,#primitive) getUint32 (rawptr, offset).
|
||||
## ## fun(#class,#primitive) getUint64 (rawptr, offset).
|
||||
## ##
|
||||
## ## fun(#class,#primitive) putInt8 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putInt16 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putInt32 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putInt64 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putUint8 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putUint16 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putUint32 (rawptr, offset, value).
|
||||
## ## fun(#class,#primitive) putUint64 (rawptr, offset, value).
|
||||
## ##
|
||||
## ## fun(#class,#primitive) getBytes (rawptr, offset, byte_array, offset_in_buffer, len_in_buffer).
|
||||
## ## fun(#class,#primitive) putBytes (rawptr, offset, byte_array, offset_in_buffer, len_in_buffer).
|
||||
## }
|
||||
|
||||
## ---------------------------------------------------------------------------------
|
||||
|
||||
k := "abcdefghijklmn"
|
||||
printf "string length %d\n" ("aaaa":length)
|
||||
printf "substring [%s]\n" (k:slice 5 6)
|
||||
@ -178,4 +637,3 @@ k := (Z:new)
|
||||
printf "%O\n" (k:basicAt 2)
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user