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require 'dl'
require 'thread'
module DL
SEM = Mutex.new
def set_callback_internal(proc_entry, addr_entry, argc, ty, &cbp)
if( argc < 0 )
raise(ArgumentError, "arity should not be less than 0.")
end
addr = nil
SEM.synchronize{
ary = proc_entry[ty]
(0...MAX_CALLBACK).each{|n|
idx = (n * DLSTACK_SIZE) + argc
if( ary[idx].nil? )
ary[idx] = cbp
addr = addr_entry[ty][idx]
break
end
}
}
addr
end
def set_cdecl_callback(ty, argc, &cbp)
set_callback_internal(CdeclCallbackProcs, CdeclCallbackAddrs, argc, ty, &cbp)
end
def set_stdcall_callback(ty, argc, &cbp)
set_callback_internal(StdcallCallbackProcs, StdcallCallbackAddrs, argc, ty, &cbp)
end
def remove_callback_internal(proc_entry, addr_entry, addr, ctype = nil)
index = nil
if( ctype )
addr_entry[ctype].each_with_index{|xaddr, idx|
if( xaddr == addr )
index = idx
end
}
else
addr_entry.each{|ty,entry|
entry.each_with_index{|xaddr, idx|
if( xaddr == addr )
index = idx
end
}
}
end
if( proc_entry[ctype][index] )
proc_entry[ctype][index] = nil
return true
else
return false
end
end
def remove_cdecl_callback(addr, ctype = nil)
remove_callback_internal(CdeclCallbackProcs, CdeclCallbackAddrs, addr, ctype)
end
def remove_stdcall_callback(addr, ctype = nil)
remove_callback_internal(StdcallCallbackProcs, StdcallCallbackAddrs, addr, ctype)
end
alias set_callback set_cdecl_callback
alias remove_callback remove_cdecl_callback
end
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