153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
/* The kernel call that is implemented in this file:
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* m_type: SYS_CPROF
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*
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* The parameters for this kernel call are:
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* m_lsys_krn_cprof.action (get/reset profiling data)
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* m_lsys_krn_cprof.mem_size (available memory for data)
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* m_lsys_krn_cprof.endpt (endpoint of caller)
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* m_lsys_krn_cprof.ctl_ptr (location of info struct)
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* m_lsys_krn_cprof.mem_ptr (location of memory for data)
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*
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* Changes:
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* 14 Aug, 2006 Created (Rogier Meurs)
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*/
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#include "kernel/system.h"
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#include <string.h>
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#if CPROFILE
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static struct cprof_ctl_s cprof_ctl_inst;
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static struct cprof_tbl_s cprof_tbl_inst;
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/*===========================================================================*
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* do_cprofile *
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*===========================================================================*/
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int do_cprofile(struct proc * caller, message * m_ptr)
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{
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int proc_nr, i;
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phys_bytes len;
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vir_bytes vir_dst;
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switch (m_ptr->m_lsys_krn_cprof.action) {
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case PROF_RESET:
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/* Reset profiling tables. */
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cprof_ctl_inst.reset = 1;
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printf("CPROFILE notice: resetting tables:");
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for (i=0; i<cprof_procs_no; i++) {
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printf(" %s", cprof_proc_info[i].name);
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/* Test whether proc still alive. */
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if (!isokendpt(cprof_proc_info[i].endpt, &proc_nr)) {
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printf("endpt not valid %u (%s)\n",
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cprof_proc_info[i].endpt, cprof_proc_info[i].name);
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continue;
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}
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/* Set reset flag. */
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data_copy(KERNEL, (vir_bytes) &cprof_ctl_inst.reset,
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cprof_proc_info[i].endpt, cprof_proc_info[i].ctl_v,
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sizeof(cprof_ctl_inst.reset));
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}
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printf("\n");
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return OK;
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case PROF_GET:
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/* Get profiling data.
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*
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* Calculate physical addresses of user pointers. Copy to user
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* program the info struct. Copy to user program the profiling
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* tables of the profiled processes.
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*/
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if(!isokendpt(m_ptr->m_lsys_krn_cprof.endpt, &proc_nr))
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return EINVAL;
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cprof_mem_size = m_ptr->m_lsys_krn_cprof.mem_size;
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printf("CPROFILE notice: getting tables:");
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/* Copy control structs of profiled processes to calculate total
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* nr of bytes to be copied to user program and find out if any
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* errors happened. */
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cprof_info.mem_used = 0;
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cprof_info.err = 0;
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for (i=0; i<cprof_procs_no; i++) {
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printf(" %s", cprof_proc_info[i].name);
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/* Test whether proc still alive. */
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if (!isokendpt(cprof_proc_info[i].endpt, &proc_nr)) {
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printf("endpt not valid %u (%s)\n",
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cprof_proc_info[i].endpt, cprof_proc_info[i].name);
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continue;
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}
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/* Copy control struct from proc to local variable. */
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data_copy(cprof_proc_info[i].endpt, cprof_proc_info[i].ctl_v,
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KERNEL, (vir_bytes) &cprof_ctl_inst,
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sizeof(cprof_ctl_inst));
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/* Calculate memory used. */
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cprof_proc_info[i].slots_used = cprof_ctl_inst.slots_used;
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cprof_info.mem_used += CPROF_PROCNAME_LEN;
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cprof_info.mem_used += sizeof(cprof_proc_info_inst.slots_used);
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cprof_info.mem_used += cprof_proc_info[i].slots_used *
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sizeof(cprof_tbl_inst);
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/* Collect errors. */
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cprof_info.err |= cprof_ctl_inst.err;
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}
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printf("\n");
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/* Do we have the space available? */
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if (cprof_mem_size < cprof_info.mem_used) cprof_info.mem_used = -1;
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/* Copy the info struct to the user process. */
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data_copy(KERNEL, (vir_bytes) &cprof_info,
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m_ptr->m_lsys_krn_cprof.endpt, m_ptr->m_lsys_krn_cprof.ctl_ptr,
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sizeof(cprof_info));
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/* If there is no space or errors occurred, don't bother copying. */
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if (cprof_info.mem_used == -1 || cprof_info.err) return OK;
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/* For each profiled process, copy its name, slots_used and profiling
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* table to the user process. */
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vir_dst = m_ptr->m_lsys_krn_cprof.mem_ptr;
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for (i=0; i<cprof_procs_no; i++) {
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len = (phys_bytes) strlen(cprof_proc_info[i].name);
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data_copy(KERNEL, (vir_bytes) cprof_proc_info[i].name,
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m_ptr->m_lsys_krn_cprof.endpt, vir_dst, len);
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vir_dst += CPROF_PROCNAME_LEN;
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len = (phys_bytes) sizeof(cprof_ctl_inst.slots_used);
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data_copy(cprof_proc_info[i].endpt,
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cprof_proc_info[i].ctl_v + sizeof(cprof_ctl_inst.reset),
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m_ptr->m_lsys_krn_cprof.endpt, vir_dst, len);
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vir_dst += len;
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len = (phys_bytes)
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(sizeof(cprof_tbl_inst) * cprof_proc_info[i].slots_used);
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data_copy(cprof_proc_info[i].endpt, cprof_proc_info[i].buf_v,
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m_ptr->m_lsys_krn_cprof.endpt, vir_dst, len);
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vir_dst += len;
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}
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return OK;
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default:
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return EINVAL;
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}
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}
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#endif /* CPROFILE */
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