55 lines
2.1 KiB
Scheme
55 lines
2.1 KiB
Scheme
(module servlet mzscheme
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(require (lib "contract.ss"))
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(require "../managers/manager.ss"
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"../servlet-structs.ss"
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"../connection-structs.ss"
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"../request-structs.ss")
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(define-struct (exn:fail:servlet:instance exn:fail) ())
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(define-struct servlet (custodian namespace manager handler))
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(define-struct servlet-instance-data (mutex context))
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(define-struct execution-context (connection request suspend))
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(define current-servlet (make-thread-cell #f))
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(define current-servlet-instance-id (make-thread-cell #f))
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(define (get-current-servlet-instance-id)
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(define instance-id (thread-cell-ref current-servlet-instance-id))
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(unless instance-id
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(raise (make-exn:fail:servlet:instance "" (current-continuation-marks))))
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instance-id)
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(define (current-servlet-manager)
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(define servlet (thread-cell-ref current-servlet))
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(unless servlet
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(raise (make-exn:fail:servlet:instance "" (current-continuation-marks))))
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(servlet-manager servlet))
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(define (current-servlet-instance-data)
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(define manager (current-servlet-manager))
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(define instance-id (thread-cell-ref current-servlet-instance-id))
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((manager-instance-lookup-data manager) instance-id))
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(provide/contract
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[struct (exn:fail:servlet:instance exn:fail)
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([msg string?]
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[continuation-marks continuation-mark-set?])]
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[struct servlet
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([custodian custodian?]
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[namespace namespace?]
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[manager manager?]
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[handler (request? . -> . servlet-response?)])]
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[struct servlet-instance-data
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([mutex semaphore?]
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[context execution-context?])]
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[struct execution-context
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([connection connection?]
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[request request?]
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[suspend procedure?])]
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; XXX contract maybe
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[current-servlet thread-cell?]
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; XXX contract maybe
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[current-servlet-instance-id thread-cell?]
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[get-current-servlet-instance-id (-> number?)]
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[current-servlet-manager (-> manager?)]
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[current-servlet-instance-data (-> servlet-instance-data?)])) |