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Add a C++ helper class for working with shared buffers.

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This is a bit more comfortable than passing the shared buffer ID manually
everywhere and keeping track of size etc.
This commit is contained in:
Andreas Kling 2019-03-08 12:22:55 +01:00
parent 0b5d5fc3c9
commit eda0866992
14 changed files with 186 additions and 46 deletions
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14
LibC/unistd.cpp
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@ -361,7 +361,7 @@ int read_tsc(unsigned* lsw, unsigned* msw)
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int create_shared_buffer(pid_t peer_pid, size_t size, void** buffer)
int create_shared_buffer(pid_t peer_pid, int size, void** buffer)
{
int rc = syscall(SC_create_shared_buffer, peer_pid, size, buffer);
__RETURN_WITH_ERRNO(rc, rc, -1);
@ -383,6 +383,18 @@ int release_shared_buffer(int shared_buffer_id)
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int get_shared_buffer_size(int shared_buffer_id)
{
int rc = syscall(SC_get_shared_buffer_size, shared_buffer_id);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int seal_shared_buffer(int shared_buffer_id)
{
int rc = syscall(SC_seal_shared_buffer, shared_buffer_id);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
char* getlogin()
{
assert(false);