From becaf43dcb3e9832c3eb951ff9908ed697868152 Mon Sep 17 00:00:00 2001 From: aarzilli Date: Tue, 1 Mar 2016 15:41:38 +0100 Subject: Read/Write mutex for Extensions map --- nexgb/xevie/xevie.go | 35 ++++++++++++++++++++++++++++++++--- 1 file changed, 32 insertions(+), 3 deletions(-) (limited to 'nexgb/xevie/xevie.go') diff --git a/nexgb/xevie/xevie.go b/nexgb/xevie/xevie.go index 7e18f8d..180312b 100644 --- a/nexgb/xevie/xevie.go +++ b/nexgb/xevie/xevie.go @@ -19,16 +19,15 @@ func Init(c *xgb.Conn) error { return xgb.Errorf("No extension named XEVIE could be found on on the server.") } - xgb.ExtLock.Lock() + c.ExtLock.Lock() c.Extensions["XEVIE"] = reply.MajorOpcode + c.ExtLock.Unlock() for evNum, fun := range xgb.NewExtEventFuncs["XEVIE"] { xgb.NewEventFuncs[int(reply.FirstEvent)+evNum] = fun } for errNum, fun := range xgb.NewExtErrorFuncs["XEVIE"] { xgb.NewErrorFuncs[int(reply.FirstError)+errNum] = fun } - xgb.ExtLock.Unlock() - return nil } @@ -119,6 +118,8 @@ type EndCookie struct { // End sends a checked request. // If an error occurs, it will be returned with the reply by calling EndCookie.Reply() func End(c *xgb.Conn, Cmap uint32) EndCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'End' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -130,6 +131,8 @@ func End(c *xgb.Conn, Cmap uint32) EndCookie { // EndUnchecked sends an unchecked request. // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. func EndUnchecked(c *xgb.Conn, Cmap uint32) EndCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'End' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -183,7 +186,9 @@ func endRequest(c *xgb.Conn, Cmap uint32) []byte { b := 0 buf := make([]byte, size) + c.ExtLock.RLock() buf[b] = c.Extensions["XEVIE"] + c.ExtLock.RUnlock() b += 1 buf[b] = 2 // request opcode @@ -206,6 +211,8 @@ type QueryVersionCookie struct { // QueryVersion sends a checked request. // If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply() func QueryVersion(c *xgb.Conn, ClientMajorVersion uint16, ClientMinorVersion uint16) QueryVersionCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -217,6 +224,8 @@ func QueryVersion(c *xgb.Conn, ClientMajorVersion uint16, ClientMinorVersion uin // QueryVersionUnchecked sends an unchecked request. // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. func QueryVersionUnchecked(c *xgb.Conn, ClientMajorVersion uint16, ClientMinorVersion uint16) QueryVersionCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -278,7 +287,9 @@ func queryVersionRequest(c *xgb.Conn, ClientMajorVersion uint16, ClientMinorVers b := 0 buf := make([]byte, size) + c.ExtLock.RLock() buf[b] = c.Extensions["XEVIE"] + c.ExtLock.RUnlock() b += 1 buf[b] = 0 // request opcode @@ -304,6 +315,8 @@ type SelectInputCookie struct { // SelectInput sends a checked request. // If an error occurs, it will be returned with the reply by calling SelectInputCookie.Reply() func SelectInput(c *xgb.Conn, EventMask uint32) SelectInputCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'SelectInput' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -315,6 +328,8 @@ func SelectInput(c *xgb.Conn, EventMask uint32) SelectInputCookie { // SelectInputUnchecked sends an unchecked request. // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. func SelectInputUnchecked(c *xgb.Conn, EventMask uint32) SelectInputCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'SelectInput' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -368,7 +383,9 @@ func selectInputRequest(c *xgb.Conn, EventMask uint32) []byte { b := 0 buf := make([]byte, size) + c.ExtLock.RLock() buf[b] = c.Extensions["XEVIE"] + c.ExtLock.RUnlock() b += 1 buf[b] = 4 // request opcode @@ -391,6 +408,8 @@ type SendCookie struct { // Send sends a checked request. // If an error occurs, it will be returned with the reply by calling SendCookie.Reply() func Send(c *xgb.Conn, Event Event, DataType uint32) SendCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'Send' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -402,6 +421,8 @@ func Send(c *xgb.Conn, Event Event, DataType uint32) SendCookie { // SendUnchecked sends an unchecked request. // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. func SendUnchecked(c *xgb.Conn, Event Event, DataType uint32) SendCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'Send' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -455,7 +476,9 @@ func sendRequest(c *xgb.Conn, Event Event, DataType uint32) []byte { b := 0 buf := make([]byte, size) + c.ExtLock.RLock() buf[b] = c.Extensions["XEVIE"] + c.ExtLock.RUnlock() b += 1 buf[b] = 3 // request opcode @@ -486,6 +509,8 @@ type StartCookie struct { // Start sends a checked request. // If an error occurs, it will be returned with the reply by calling StartCookie.Reply() func Start(c *xgb.Conn, Screen uint32) StartCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'Start' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -497,6 +522,8 @@ func Start(c *xgb.Conn, Screen uint32) StartCookie { // StartUnchecked sends an unchecked request. // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. func StartUnchecked(c *xgb.Conn, Screen uint32) StartCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() if _, ok := c.Extensions["XEVIE"]; !ok { panic("Cannot issue request 'Start' using the uninitialized extension 'XEVIE'. xevie.Init(connObj) must be called first.") } @@ -550,7 +577,9 @@ func startRequest(c *xgb.Conn, Screen uint32) []byte { b := 0 buf := make([]byte, size) + c.ExtLock.RLock() buf[b] = c.Extensions["XEVIE"] + c.ExtLock.RUnlock() b += 1 buf[b] = 1 // request opcode -- cgit v1.2.3-70-g09d2