From e485095690a71af1a9bc8e811eb4ea64a95508aa Mon Sep 17 00:00:00 2001
From: chenshijun <chenshijun@aiotlink.com>
Date: 星期三, 15 四月 2020 15:47:39 +0800
Subject: [PATCH] shmData修改偏移的bug

---
 shmData.go |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/shmData.go b/shmData.go
index 56ec5ac..fad696c 100644
--- a/shmData.go
+++ b/shmData.go
@@ -37,10 +37,10 @@
 		return err
 	}
 	sdi := shmData2Info(shmData)
-	if len(data) <= len(shmData) {
+	if len(data) <= len(shmData)-SHMSLICEOFFSET {
 		sdi.Len = uint32(len(data))
 	} else {
-		sdi.Len = uint32(len(shmData))
+		sdi.Len = uint32(len(shmData)-SHMSLICEOFFSET)
 	}
 
 	tmpData := ptr2Slice(unsafe.Pointer(&sdi.Cache), int(sdi.Len), len(shmData)-SHMSLICEOFFSET)
@@ -74,10 +74,10 @@
 // 閫傚悎瑙g爜浣跨敤
 func DeepCopyDataToShm(memData,shmData []byte) {
 	sdi := shmData2Info(shmData)
-	if len(memData) <= len(shmData) {
+	if len(memData) <= len(shmData)-SHMSLICEOFFSET {
 		sdi.Len = uint32(len(memData))
 	} else {
-		sdi.Len = uint32(len(shmData))
+		sdi.Len = uint32(len(shmData)-SHMSLICEOFFSET)
 	}
 
 	tmpData := ptr2Slice(unsafe.Pointer(&sdi.Cache), int(sdi.Len), len(shmData)-SHMSLICEOFFSET)

--
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