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@ -52,7 +52,7 @@ VOID LOS_BitmapSet(UINT32 *bitmap, UINT16 pos)
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*bitmap |= 1U << (pos & OS_BITMAP_MASK);
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}
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//这个函数用于清除位图中特定位置的位。
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VOID LOS_BitmapClr(UINT32 *bitmap, UINT16 pos)
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{
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if (bitmap == NULL) {
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@ -61,7 +61,7 @@ VOID LOS_BitmapClr(UINT32 *bitmap, UINT16 pos)
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*bitmap &= ~(1U << (pos & OS_BITMAP_MASK));
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}
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//这个函数用于获取位图中最高位的索引。
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UINT16 LOS_HighBitGet(UINT32 bitmap)
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{
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if (bitmap == 0) {
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@ -70,7 +70,7 @@ UINT16 LOS_HighBitGet(UINT32 bitmap)
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return (OS_BITMAP_MASK - CLZ(bitmap));
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}
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//这个函数用于获取位图中最低位的索引
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UINT16 LOS_LowBitGet(UINT32 bitmap)
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{
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if (bitmap == 0) {
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@ -79,7 +79,7 @@ UINT16 LOS_LowBitGet(UINT32 bitmap)
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return CTZ(bitmap);
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}
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//这个函数用于设置位图中一系列连续的位。
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VOID LOS_BitmapSetNBits(UINTPTR *bitmap, UINT32 start, UINT32 numsSet)
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{
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UINTPTR *p = bitmap + BITMAP_WORD(start);
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@ -99,7 +99,7 @@ VOID LOS_BitmapSetNBits(UINTPTR *bitmap, UINT32 start, UINT32 numsSet)
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*p |= maskToSet;
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}
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}
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//这个函数用于清除位图中一系列连续的位。
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VOID LOS_BitmapClrNBits(UINTPTR *bitmap, UINT32 start, UINT32 numsClear)
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{
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UINTPTR *p = bitmap + BITMAP_WORD(start);
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@ -119,7 +119,7 @@ VOID LOS_BitmapClrNBits(UINTPTR *bitmap, UINT32 start, UINT32 numsClear)
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*p &= ~maskToClear;
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}
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}
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//这个函数用于找到位图中第一个为1的位的位置。
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INT32 LOS_BitmapFfz(UINTPTR *bitmap, UINT32 numBits)
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{
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INT32 bit, i;
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