mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
Keir Fraser
5cc436c1d2
This patch eliminate the global variables in libxenctrl (used for logging and error reporting). Instead the information which was in the global variables is now in a new xc_interface* opaque structure, which xc_interface open returns instead of the raw file descriptor; furthermore, logging is done via xentoollog. There are three new parameters to xc_interface_open to control the logging, but existing callers can just pass "0" for all three to get the old behaviour. All libxc callers have been adjusted accordingly. Also update QEMU_TAG for corresponding qemu change. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
42 lines
967 B
C
42 lines
967 B
C
#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <xenctrl.h>
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int main(int argc, char * argv[])
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{
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unsigned long size;
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xc_interface *xc_handle = xc_interface_open(0,0,0);
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if ( xc_tbuf_get_size(xc_handle, &size) != 0 )
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{
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perror("Failure to get tbuf info from Xen. Guess size is 0");
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printf("This may mean that tracing is not enabled in xen.\n");
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}
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else
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{
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printf("Current tbuf size: 0x%lx\n", size);
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}
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if (argc < 2)
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exit(0);
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size = atol(argv[1]);
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if ( xc_tbuf_set_size(xc_handle, size) != 0 )
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{
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perror("set_size Hypercall failure");
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exit(1);
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}
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printf("set_size succeeded.\n");
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if (xc_tbuf_get_size(xc_handle, &size) != 0)
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perror("Failure to get tbuf info from Xen."
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" Tracing must be enabled first");
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else
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printf("New tbuf size: 0x%lx\n", size);
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xc_interface_close(xc_handle);
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return 0;
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}
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