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</refmeta> |
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|
19 |
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<refnamediv> |
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+ |
<refname>sg_get_process_stats</refname> |
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<refname>sg_get_process_count</refname> |
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<refpurpose>get process statistics</refpurpose> |
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</refnamediv> |
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<funcsynopsis> |
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<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo> |
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<funcprototype> |
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+ |
<funcdef>sg_process_stats *<function>sg_get_process_stats</function></funcdef> |
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+ |
<paramdef>int *<parameter>entries</parameter></paramdef> |
31 |
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</funcprototype> |
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+ |
<funcprototype> |
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<funcdef>sg_process_count *<function>sg_get_process_count</function></funcdef> |
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<void/> |
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|
</funcprototype> |
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<refsect1> |
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<title>Description</title> |
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<para> |
42 |
+ |
The <function>sg_get_process_stats</function> takes a pointer to |
43 |
+ |
an int, <parameter>entries</parameter>, which is filled with the |
44 |
+ |
number of processes the snapshot contains. A pointer to the first |
45 |
+ |
entry, of type <structname>sg_process_stats</structname> is |
46 |
+ |
returned, and <parameter>entries</parameter> can be used to iterate |
47 |
+ |
through to the last entry. |
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</para> |
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<para> |
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|
<function>sg_get_process_count</function> returns a pointer to a |
51 |
|
static buffer of type <structname>sg_process_count</structname>. |
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</para> |
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<para> |
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< |
It provides information on the number of processes and the |
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< |
system and the different states they're in. |
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> |
These two functions provide information on the process running |
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> |
on the system. In the first case lots of detail is provided, and |
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> |
in the second case a summary of the states of the current processes. |
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</para> |
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</refsect1> |
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|
|
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<title>Return Values</title> |
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|
|
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<para> |
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< |
The structure returned is of type |
64 |
> |
The structure returned by sg_get_process_stats is of type |
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> |
<structname>sg_process_stats</structname>. |
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> |
</para> |
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> |
|
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> |
<programlisting> |
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> |
typedef struct { |
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> |
char *process_name; |
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> |
char *proctitle; |
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|
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pid_t pid; |
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> |
pid_t parent; /* Parent pid */ |
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> |
pid_t pgid; /* process id of process group leader */ |
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> |
|
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> |
uid_t uid; |
78 |
> |
uid_t euid; |
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> |
gid_t gid; |
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> |
gid_t egid; |
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> |
|
82 |
> |
unsigned long long proc_size; /* in bytes */ |
83 |
> |
unsigned long long proc_resident; /* in bytes */ |
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> |
time_t time_spent; /* time running in seconds */ |
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> |
double cpu_percent; |
86 |
> |
int nice; |
87 |
> |
sg_process_state state; |
88 |
> |
} sg_process_stats; |
89 |
> |
</programlisting> |
90 |
> |
|
91 |
> |
<programlisting> |
92 |
> |
typedef enum { |
93 |
> |
SG_PROCESS_STATE_RUNNING, |
94 |
> |
SG_PROCESS_STATE_SLEEPING, |
95 |
> |
SG_PROCESS_STATE_STOPPED, |
96 |
> |
SG_PROCESS_STATE_ZOMBIE, |
97 |
> |
SG_PROCESS_STATE_UNKNOWN |
98 |
> |
} sg_process_state; |
99 |
> |
</programlisting> |
100 |
> |
|
101 |
> |
<variablelist> |
102 |
> |
<varlistentry> |
103 |
> |
<term><structfield>process_name</structfield></term> |
104 |
> |
<listitem> |
105 |
> |
<para> |
106 |
> |
The name of the command that was run. |
107 |
> |
</para> |
108 |
> |
</listitem> |
109 |
> |
</varlistentry> |
110 |
> |
<varlistentry> |
111 |
> |
<term><structfield>proctitle</structfield></term> |
112 |
> |
<listitem> |
113 |
> |
<para> |
114 |
> |
The command line (the "title") of the process. Take |
115 |
> |
note - this can be modified by the process, so isn't |
116 |
> |
guaranteed to be the original command line. |
117 |
> |
</para> |
118 |
> |
</listitem> |
119 |
> |
</varlistentry> |
120 |
> |
<varlistentry> |
121 |
> |
<term><structfield>pid</structfield></term> |
122 |
> |
<listitem> |
123 |
> |
<para> |
124 |
> |
The process ID. |
125 |
> |
</para> |
126 |
> |
</listitem> |
127 |
> |
</varlistentry> |
128 |
> |
<varlistentry> |
129 |
> |
<term><structfield>parent</structfield></term> |
130 |
> |
<listitem> |
131 |
> |
<para> |
132 |
> |
The parent process ID. |
133 |
> |
</para> |
134 |
> |
</listitem> |
135 |
> |
</varlistentry> |
136 |
> |
<varlistentry> |
137 |
> |
<term><structfield>pgid</structfield></term> |
138 |
> |
<listitem> |
139 |
> |
<para> |
140 |
> |
The process ID of the process group leader. |
141 |
> |
</para> |
142 |
> |
</listitem> |
143 |
> |
</varlistentry> |
144 |
> |
<varlistentry> |
145 |
> |
<term><structfield>uid</structfield></term> |
146 |
> |
<listitem> |
147 |
> |
<para> |
148 |
> |
The UID the process is running as. |
149 |
> |
</para> |
150 |
> |
</listitem> |
151 |
> |
</varlistentry> |
152 |
> |
<varlistentry> |
153 |
> |
<term><structfield>euid</structfield></term> |
154 |
> |
<listitem> |
155 |
> |
<para> |
156 |
> |
The effective UID the process is running as. |
157 |
> |
</para> |
158 |
> |
</listitem> |
159 |
> |
</varlistentry> |
160 |
> |
<varlistentry> |
161 |
> |
<term><structfield>gid</structfield></term> |
162 |
> |
<listitem> |
163 |
> |
<para> |
164 |
> |
The GID the process is running as. |
165 |
> |
</para> |
166 |
> |
</listitem> |
167 |
> |
</varlistentry> |
168 |
> |
<varlistentry> |
169 |
> |
<term><structfield>egid</structfield></term> |
170 |
> |
<listitem> |
171 |
> |
<para> |
172 |
> |
The effective GID the process is running as. |
173 |
> |
</para> |
174 |
> |
</listitem> |
175 |
> |
</varlistentry> |
176 |
> |
<varlistentry> |
177 |
> |
<term><structfield>proc_size</structfield></term> |
178 |
> |
<listitem> |
179 |
> |
<para> |
180 |
> |
The size of the process in bytes. |
181 |
> |
</para> |
182 |
> |
</listitem> |
183 |
> |
</varlistentry> |
184 |
> |
<varlistentry> |
185 |
> |
<term><structfield>proc_resident</structfield></term> |
186 |
> |
<listitem> |
187 |
> |
<para> |
188 |
> |
The size of the process that's resident in memory. |
189 |
> |
</para> |
190 |
> |
</listitem> |
191 |
> |
</varlistentry> |
192 |
> |
<varlistentry> |
193 |
> |
<term><structfield>time_spent</structfield></term> |
194 |
> |
<listitem> |
195 |
> |
<para> |
196 |
> |
The number of seconds the process has been running. |
197 |
> |
</para> |
198 |
> |
</listitem> |
199 |
> |
</varlistentry> |
200 |
> |
<varlistentry> |
201 |
> |
<term><structfield>cpu_percent</structfield></term> |
202 |
> |
<listitem> |
203 |
> |
<para> |
204 |
> |
The current percentage of CPU the process is using. |
205 |
> |
</para> |
206 |
> |
</listitem> |
207 |
> |
</varlistentry> |
208 |
> |
<varlistentry> |
209 |
> |
<term><structfield>nice</structfield></term> |
210 |
> |
<listitem> |
211 |
> |
<para> |
212 |
> |
The nice value of the process. |
213 |
> |
</para> |
214 |
> |
</listitem> |
215 |
> |
</varlistentry> |
216 |
> |
<varlistentry> |
217 |
> |
<term><structfield>state</structfield></term> |
218 |
> |
<listitem> |
219 |
> |
<para> |
220 |
> |
The current state of the process. See sg_process_state |
221 |
> |
for permitted values. |
222 |
> |
</para> |
223 |
> |
</listitem> |
224 |
> |
</varlistentry> |
225 |
> |
</variablelist> |
226 |
> |
|
227 |
> |
<para> |
228 |
> |
The structure returned by sg_get_process_count is of type |
229 |
|
<structname>sg_process_count</structname>. |
230 |
|
</para> |
231 |
|
|