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Kernel: Add a simple shared memory API for two processes only.

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And use this to implement shared bitmaps between WindowServer and clients.
This commit is contained in:
Andreas Kling 2019-02-16 12:13:43 +01:00
parent 4db78dabd3
commit 4ea28bf0a5
13 changed files with 240 additions and 48 deletions
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3
LibC/unistd.h
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@ -8,6 +8,9 @@ __BEGIN_DECLS
extern char** environ;
int create_shared_buffer(pid_t peer_pid, size_t, void** buffer);
void* get_shared_buffer(int shared_buffer_id);
int release_shared_buffer(int shared_buffer_id);
int read_tsc(unsigned* lsw, unsigned* msw);
inline int getpagesize() { return 4096; }
pid_t fork();