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Merge "Add native_handle_clone"

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Chia-I Wu 2016-10-08 01:25:35 +00:00 committed by Gerrit Code Review
commit e8f6c7398b
2 changed files with 30 additions and 0 deletions
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9
include/cutils/native_handle.h
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@ -56,6 +56,15 @@ int native_handle_close(const native_handle_t* h);
*/
native_handle_t* native_handle_create(int numFds, int numInts);
/*
* native_handle_clone
*
* creates a native_handle_t and initializes it from another native_handle_t.
* Must be destroyed with native_handle_delete().
*
*/
native_handle_t* native_handle_clone(const native_handle_t* handle);
/*
* native_handle_delete
*

21
libcutils/native_handle.c
View file

@ -44,6 +44,27 @@ native_handle_t* native_handle_create(int numFds, int numInts)
return h;
}
native_handle_t* native_handle_clone(const native_handle_t* handle)
{
native_handle_t* clone = native_handle_create(handle->numFds, handle->numInts);
int i;
for (i = 0; i < handle->numFds; i++) {
clone->data[i] = dup(handle->data[i]);
if (clone->data[i] < 0) {
clone->numFds = i;
native_handle_close(clone);
native_handle_delete(clone);
return NULL;
}
}
memcpy(&clone->data[handle->numFds], &handle->data[handle->numFds],
sizeof(int) * handle->numInts);
return clone;
}
int native_handle_delete(native_handle_t* h)
{
if (h) {