1# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 2# Copyright (c) 2009 The Hewlett-Packard Development Company 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are 7# met: redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer; 9# redistributions in binary form must reproduce the above copyright 10# notice, this list of conditions and the following disclaimer in the 11# documentation and/or other materials provided with the distribution; 12# neither the name of the copyright holders nor the names of its 13# contributors may be used to endorse or promote products derived from 14# this software without specific prior written permission. 15# 16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28from slicc.ast.StatementAST import StatementAST 29from slicc.symbols import Var 30 31class PeekStatementAST(StatementAST): 32 def __init__(self, slicc, queue_name, type_ast, pairs, statements, method): 33 super(PeekStatementAST, self).__init__(slicc, pairs) 34 35 self.queue_name = queue_name 36 self.type_ast = type_ast 37 self.statements = statements 38 self.method = method 39 40 def __repr__(self): 41 return "[PeekStatementAST: %r queue_name: %r type: %r %r]" % \ 42 (self.method, self.queue_name, self.type_ast, self.statements) 43 44 def generate(self, code, return_type): 45 self.symtab.pushFrame() 46 47 msg_type = self.type_ast.type 48 49 # Add new local var to symbol table 50 var = Var(self.symtab, "in_msg", self.location, msg_type, "(*in_msg_ptr)", 51 self.pairs) 52 self.symtab.newSymbol(var) 53 54 # Check the queue type 55 self.queue_name.assertType("InPort") 56 57 # Declare the new "in_msg_ptr" variable
| 2# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 3# Copyright (c) 2009 The Hewlett-Packard Development Company 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions are 8# met: redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer; 10# redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution; 13# neither the name of the copyright holders nor the names of its 14# contributors may be used to endorse or promote products derived from 15# this software without specific prior written permission. 16# 17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29from slicc.ast.StatementAST import StatementAST 30from slicc.symbols import Var 31 32class PeekStatementAST(StatementAST): 33 def __init__(self, slicc, queue_name, type_ast, pairs, statements, method): 34 super(PeekStatementAST, self).__init__(slicc, pairs) 35 36 self.queue_name = queue_name 37 self.type_ast = type_ast 38 self.statements = statements 39 self.method = method 40 41 def __repr__(self): 42 return "[PeekStatementAST: %r queue_name: %r type: %r %r]" % \ 43 (self.method, self.queue_name, self.type_ast, self.statements) 44 45 def generate(self, code, return_type): 46 self.symtab.pushFrame() 47 48 msg_type = self.type_ast.type 49 50 # Add new local var to symbol table 51 var = Var(self.symtab, "in_msg", self.location, msg_type, "(*in_msg_ptr)", 52 self.pairs) 53 self.symtab.newSymbol(var) 54 55 # Check the queue type 56 self.queue_name.assertType("InPort") 57 58 # Declare the new "in_msg_ptr" variable
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59 qcode = self.queue_name.var.code 60 code(''' 61{ 62 // Declare message 63 const $mtid* in_msg_ptr M5_VAR_USED; 64 in_msg_ptr = dynamic_cast<const $mtid *>(($qcode).${{self.method}}()); 65 if (in_msg_ptr == NULL) { 66 // If the cast fails, this is the wrong inport (wrong message type). 67 // Throw an exception, and the caller will decide to either try a 68 // different inport or punt. 69 throw RejectException(); 70 } 71''') 72 73 if self.pairs.has_key("block_on"): 74 address_field = self.pairs['block_on'] 75 code(''' 76 if (m_is_blocking && 77 (m_block_map.count(in_msg_ptr->m_$address_field) == 1) && 78 (m_block_map[in_msg_ptr->m_$address_field] != &$qcode)) { 79 $qcode.delayHead(); 80 continue; 81 } 82 ''') 83 84 if self.pairs.has_key("wake_up"): 85 address_field = self.pairs['wake_up'] 86 code(''' 87 if (m_waiting_buffers.count(in_msg_ptr->m_$address_field) > 0) { 88 wakeUpBuffers(in_msg_ptr->m_$address_field); 89 } 90 ''') 91 92 # The other statements 93 self.statements.generate(code, return_type) 94 self.symtab.popFrame() 95 code("}") 96 97 def findResources(self, resources): 98 self.statements.findResources(resources)
| 60 qcode = self.queue_name.var.code 61 code(''' 62{ 63 // Declare message 64 const $mtid* in_msg_ptr M5_VAR_USED; 65 in_msg_ptr = dynamic_cast<const $mtid *>(($qcode).${{self.method}}()); 66 if (in_msg_ptr == NULL) { 67 // If the cast fails, this is the wrong inport (wrong message type). 68 // Throw an exception, and the caller will decide to either try a 69 // different inport or punt. 70 throw RejectException(); 71 } 72''') 73 74 if self.pairs.has_key("block_on"): 75 address_field = self.pairs['block_on'] 76 code(''' 77 if (m_is_blocking && 78 (m_block_map.count(in_msg_ptr->m_$address_field) == 1) && 79 (m_block_map[in_msg_ptr->m_$address_field] != &$qcode)) { 80 $qcode.delayHead(); 81 continue; 82 } 83 ''') 84 85 if self.pairs.has_key("wake_up"): 86 address_field = self.pairs['wake_up'] 87 code(''' 88 if (m_waiting_buffers.count(in_msg_ptr->m_$address_field) > 0) { 89 wakeUpBuffers(in_msg_ptr->m_$address_field); 90 } 91 ''') 92 93 # The other statements 94 self.statements.generate(code, return_type) 95 self.symtab.popFrame() 96 code("}") 97 98 def findResources(self, resources): 99 self.statements.findResources(resources)
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