1# Copyright (c) 2013 Advanced Micro Devices, Inc. 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 EnqueueStatementAST(StatementAST): 33 def __init__(self, slicc, queue_name, type_ast, lexpr, statements): 34 super(EnqueueStatementAST, self).__init__(slicc) 35 36 self.queue_name = queue_name 37 self.type_ast = type_ast 38 self.latexpr = lexpr 39 self.statements = statements 40 41 def __repr__(self): 42 return "[EnqueueStatementAst: %s %s %s]" % \ 43 (self.queue_name, self.type_ast.ident, self.statements) 44 45 def generate(self, code, return_type): 46 code("{") 47 code.indent() 48 self.symtab.pushFrame() 49 50 msg_type = self.type_ast.type 51 52 # Add new local var to symbol table 53 v = Var(self.symtab, "out_msg", self.location, msg_type, "*out_msg", 54 self.pairs) 55 self.symtab.newSymbol(v) 56 57 # Declare message 58 code("std::shared_ptr<${{msg_type.c_ident}}> out_msg = "\ 59 "std::make_shared<${{msg_type.c_ident}}>(clockEdge());") 60 61 # The other statements 62 t = self.statements.generate(code, None) 63 self.queue_name.assertType("OutPort") 64 65 if self.latexpr != None: 66 ret_type, rcode = self.latexpr.inline(True) 67 code("(${{self.queue_name.var.code}}).enqueue(" \ 68 "out_msg, clockEdge(), cyclesToTicks(Cycles($rcode)));") 69 else: 70 code("(${{self.queue_name.var.code}}).enqueue(out_msg, "\ 71 "clockEdge(), cyclesToTicks(Cycles(1)));") 72 73 # End scope 74 self.symtab.popFrame() 75 code.dedent() 76 code("}") 77 78 def findResources(self, resources): 79 var = self.queue_name.var 80 res_count = int(resources.get(var, 0)) 81 resources[var] = str(res_count + 1) 82